Names of 19
| Nominal | 19 |
| Cardinal | nineteen |
| Ordinal | 19th |
| This number as US currency | nineteen dollars |
| Is 19 an odd number? | 19 is an odd number |
| Is 19 an even number? | 19 is NOT an even number |
| Is 19 a palindrome? | 19 is NOT a palindrome number |
| Is 19 a triangle number? | 19 is NOT a triangle number |
19 in other Bases
| Base 2 (Binary) | 100112 |
| Base 3 (Ternary) | 2013 |
| Base 4 (Quaternary) | 1034 |
| Base 5 (Quinary) | 345 |
| Base 6 (Senary) | 316 |
| Base 8 (Octal) | 238 |
| Base 12 (Duodecimal) | 1712 |
| Base 16 (Hexadecimal) | 1316 |
| Base 20 (Vigesimal) | J20 |
Primes and Factors tests for 19
| Is 19 a Prime Number? | 19 is a prime |
| Is 19 a perfect number? | 19 is NOT a perfect number |
| Is 19 a Mersenne Prime? | 19 is NOT a Mersenne prime |
| Is 19 a Fermat Prime? | 19 is NOT a Fermat prime |
| Is 19 a Fibonacci Prime? | 19 is NOT a Fibonacci prime |
| Is 19 a Partition Prime? | 19 is NOT a Partition prime |
| Is 19 a Pell Prime? | 19 is NOT a Pell prime |
| Prime Factors | Prime factors of 19 |
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19 in other Numerals
| 19 in Roman Numeral | XIX |
| 19 in Chinese Numeral | 壹拾玖 |
| 19 in Egyptian Numeral | 𓎆𓐂 |
| 19 in Babylonian Numeral |  |
Roots and stuff for 19
| Is 19 a square number? | 19 is NOT a square number |
| Is 19 a cube number? | 19 is NOT a cube number |
| Square root of the number 19 | 4.3588989435407 |
| Cube root of the number 19 | 2.6684016487219 |
Recreational math for 19
| Number 19 reversed | 91 |
| Sum of the digits | 10 |
| No of digits | 2 |