19801
Everything about the number 19801 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
Names of 19801
| Nominal | 19801 |
| Cardinal | nineteen thousand eight hundred one |
| Ordinal | 19,801st |
| This number as US currency | nineteen thousand eight hundred one dollars |
Properties (and some facts) of 19801
| Is 19801 an odd number? | 19801 is an odd number |
| Is 19801 an even number? | 19801 is not an even number |
| Is 19801 a palindrome? | 19801 is not a palindrome |
| Is 19801 a triangle number? | 19801 is not a triangle number |
19801 in other bases
| Base 2 (Binary) | 100110101011001 |
| Base 3 (Ternary) | 1000011101 |
| Base 4 (Quaternary) | 10311121 |
| Base 5 (Quinary) | 1113201 |
| Base 6 (Senary) | 231401 |
| Base 8 (Octal) | 46531 |
| Base 12 (Duodecimal) | B561 |
| Base 16 (Hexadecimal) | 4D59 |
| Base 20 (Vigesimal) | 29A1 |
Primes and factors tests for 19801
| Is 19801 a prime number? | 19801 is a prime number |
| Is 19801 a perfect number? | 19801 is not a perfect number |
| Is 19801 a Mersenne prime? | 19801 is not a Mersenne prime |
| Is 19801 a Fermat prime? | 19801 is not a Fermat prime |
| Is 19801 a Fibonacci prime? | 19801 is not a Fibonacci prime |
| Is 19801 a partition prime? | 19801 is not a partition prime |
| Is 19801 a Pell prime? | 19801 is not a Pell prime |
| Prime Factors | Prime factors of 19801 |
19801 in other numeral systems
| 19801 in Roman numerals | XMXDCCCI |
| 19801 in Chinese numerals | 壹萬玖仟捌佰壹 |
| 19801 in Babylonian numerals |    |
| 19801 in Egyptian numerals | 𓂭𓇄𓍩𓏺 |
Roots and squares for 19801
| Is 19801 a square number? | 19801 is not a square number |
| Is 19801 a cube number? | 19801 is not a cube number |
| Square root of 19801 | 140.71602609511 |
| Cube root of 19801 | 27.0538477266 |
Recreational math for 19801
| Number 19801 reversed | 10891 |
| Sum of the digits | 19 |
| Number of digits | 5 |