The number 18167
18167 is a composite number with 4 divisors. Its prime factorisation is 37 × 491. Divisors (4): 1, 37, 491, 18167.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 18167: a semiprime: 37 × 491, the product of two primes.
- 2
18167 is composite. Its prime factorisation is
- 3
The divisors add up to 18696; without 18167 itself that is 529, so 18167 is deficient (529 is less than 18167). Euler's totient φ(18167) = 17640 numbers up to 18167 share no factor with it.
- 4
The digits of 18167 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 92 steps to reach 1.
LaTeX source of the formulas on this page
\[ 18167 = 37 \times 491 \]
18167 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 18696 |
| Euler totient φ(n) | 17640 |
| Square | 330039889 |
| Cube | 5995834663463 |
| Square root | 134.785014 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 92 |
| Scientific notation | 1.8167 × |
18167 in other forms
| Form | Value |
|---|---|
| In words | eighteen thousand one hundred and sixty-seven |
| Binary (base 2) | 100011011110111 |
| Octal (base 8) | 43367 |
| Hexadecimal (base 16) | 46F7 |
| Base 3 | 220220212 |
| As time | 18167 seconds = 5 h 2 min 47 s |
Is 18167 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 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 5) | 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 6) | 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 18167 a prime number?
No. 18167 = 37 × 491, so it is divisible by 37.
What are the factors of 18167?
1, 37, 491, 18167.
What is 18167 in binary?
100011011110111 (hexadecimal 46F7, octal 43367).
What is the square root of 18167?
About 134.7850.
Is 18167 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 18167?
18167 is a semiprime: 37 × 491, the product of two primes.