The number 10918
10918 is a composite number with 8 divisors. Its prime factorisation is 2 × 53 × 103. Divisors (8): 1, 2, 53, 103, 106, 206, 5459, 10918.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
10918 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
10918 is composite. Its prime factorisation is
- 3
The divisors add up to 16848; without 10918 itself that is 5930, so 10918 is deficient (5930 is less than 10918). Euler's totient φ(10918) = 5304 numbers up to 10918 share no factor with it.
- 4
The digits of 10918 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 161 steps to reach 1.
LaTeX source of the formulas on this page
\[ 10918 = 2 \times 53 \times 103 \]
10918 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 16848 |
| Euler totient φ(n) | 5304 |
| Square | 119202724 |
| Cube | 1301455340632 |
| Square root | 104.489234 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 161 |
| Scientific notation | 1.0918 × |
10918 in other forms
| Form | Value |
|---|---|
| In words | ten thousand nine hundred and eighteen |
| Binary (base 2) | 10101010100110 |
| Octal (base 8) | 25246 |
| Hexadecimal (base 16) | 2AA6 |
| Base 3 | 112222101 |
| As time | 10918 seconds = 3 h 1 min 58 s |
Is 10918 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (10918 ÷ 2 = 5459) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | 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 | No (remainder 4) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | 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 6) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | 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 | No (remainder 6) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 10) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 10918 a prime number?
No. 10918 = 2 × 53 × 103, so it is divisible by 2.
What are the factors of 10918?
1, 2, 53, 103, 106, 206, 5459, 10918.
What is 10918 in binary?
10101010100110 (hexadecimal 2AA6, octal 25246).
What is the square root of 10918?
About 104.4892.
Is 10918 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 10918?
It is a composite number with 8 divisors.