Names of 18009
| Nominal | 18009 |
| Cardinal | eighteen thousand nine |
| Ordinal | 18,009th |
| This number as US currency | eighteen thousand nine dollars |
| Is 18009 an odd number? | 18009 is an odd number |
| Is 18009 an even number? | 18009 is NOT an even number |
| Is 18009 a palindrome? | 18009 is NOT a palindrome number |
| Is 18009 a triangle number? | 18009 is NOT a triangle number |
18009 in other Bases
| Base 2 (Binary) | 1000110010110012 |
| Base 3 (Ternary) | 2202010003 |
| Base 4 (Quaternary) | 101211214 |
| Base 5 (Quinary) | 10340145 |
| Base 6 (Senary) | 2152136 |
| Base 8 (Octal) | 431318 |
| Base 12 (Duodecimal) | A50912 |
| Base 16 (Hexadecimal) | 465916 |
| Base 20 (Vigesimal) | 250920 |
Primes and Factors tests for 18009
| Is 18009 a Prime Number? | 18009 is NOT a prime |
| Is 18009 a perfect number? | 18009 is NOT a perfect number |
| Is 18009 a Mersenne Prime? | 18009 is NOT a Mersenne prime |
| Is 18009 a Fermat Prime? | 18009 is NOT a Fermat prime |
| Is 18009 a Fibonacci Prime? | 18009 is NOT a Fibonacci prime |
| Is 18009 a Partition Prime? | 18009 is NOT a Partition prime |
| Is 18009 a Pell Prime? | 18009 is NOT a Pell prime |
| Prime Factors | Prime factors of 18009 |
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18009 in other Numerals
| 18009 in Roman Numeral | XVMMMIX |
| 18009 in Chinese Numeral | 壹萬捌仟玖 |
| 18009 in Egyptian Numeral | 𓂭𓇃𓐂 |
| 18009 in Babylonian Numeral |   |
Roots and stuff for 18009
| Is 18009 a square number? | 18009 is NOT a square number |
| Is 18009 a cube number? | 18009 is NOT a cube number |
| Square root of the number 18009 | 134.19761547807 |
| Cube root of the number 18009 | 26.211781116631 |
Recreational math for 18009
| Number 18009 reversed | 90081 |
| Sum of the digits | 18 |
| No of digits | 5 |