The number 4818
4818 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 11 × 73. Divisors (16): 1, 2, 3, 6, 11, 22, 33, 66, 73, 146, 219, 438, 803, 1606, 2409, 4818.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
4818 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
4818 is composite. Its prime factorisation is
- 3
The divisors add up to 10656; without 4818 itself that is 5838, so 4818 is abundant (5838 is more than 4818). Euler's totient φ(4818) = 1440 numbers up to 4818 share no factor with it.
- 4
The digits of 4818 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 121 steps to reach 1.
LaTeX source of the formulas on this page
\[ 4818 = 2 \times 3 \times 11 \times 73 \]
4818 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 10656 |
| Euler totient φ(n) | 1440 |
| Square | 23213124 |
| Cube | 111840831432 |
| Square root | 69.411815 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 121 |
| Scientific notation | 4.818 × |
4818 in other forms
| Form | Value |
|---|---|
| In words | four thousand eight hundred and eighteen |
| Binary (base 2) | 1001011010010 |
| Octal (base 8) | 11322 |
| Hexadecimal (base 16) | 12D2 |
| Base 3 | 20121110 |
| As time | 4818 seconds = 1 h 20 min 18 s |
Is 4818 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (4818 ÷ 2 = 2409) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (4818 ÷ 3 = 1606) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (4818 ÷ 6 = 803) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 8) | A number is divisible by 10 if the last digit is 0. |
| 11 | Yes (4818 ÷ 11 = 438) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 4818 a prime number?
No. 4818 = 2 × 3 × 11 × 73, so it is divisible by 2.
What are the factors of 4818?
1, 2, 3, 6, 11, 22, 33, 66, 73, 146, 219, 438, 803, 1606, 2409, 4818.
What is 4818 in binary?
1001011010010 (hexadecimal 12D2, octal 11322).
What is the square root of 4818?
About 69.4118.
Is 4818 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 4818?
It is a composite number with 16 divisors.