The number 18107
18107 is a composite number with 4 divisors. Its prime factorisation is 19 × 953. Divisors (4): 1, 19, 953, 18107.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 18107: a semiprime: 19 × 953, the product of two primes.
- 2
18107 is composite. Its prime factorisation is
- 3
The divisors add up to 19080; without 18107 itself that is 973, so 18107 is deficient (973 is less than 18107). Euler's totient φ(18107) = 17136 numbers up to 18107 share no factor with it.
- 4
The digits of 18107 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 40 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18107 = 19 \times 953 \]
18107 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 19080 |
| Euler totient φ(n) | 17136 |
| Square | 327863449 |
| Cube | 5936623471043 |
| Square root | 134.562253 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 40 |
| Scientific notation | 1.8107 × |
18107 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand one hundred and seven |
| Binary (base 2) | 100011010111011 |
| Octal (base 8) | 43273 |
| Hexadecimal (base 16) | 46BB |
| Base 3 | 220211122 |
| As time | 18107 seconds = 5 h 1 min 47 s |
Is 18107 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 2) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 5) | 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 7) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 1) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 18107 a prime number?
No. 18107 = 19 × 953, so it is divisible by 19.
What are the factors of 18107?
1, 19, 953, 18107.
What is 18107 in binary?
100011010111011 (hexadecimal 46BB, octal 43273).
What is the square root of 18107?
About 134.5623.
Is 18107 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 18107?
18107 is a semiprime: 19 × 953, the product of two primes.