The Natural Number 19

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Properties of the Number 19

  • Because 19 is not divisible by 2 ...
    • 19 is an odd number
    • 19 has parity 1
    • 19 is not an even number
  • Because 19 has only 1 and itself as divisors ...
    • 19 is a prime number
    • 19 is not a composite number

Alternative Representations of the Number 19

  • Base 2 (binary): 10011
  • Base 8 (octal): 23
  • Base 16 (hexadecimal): 13
  • Roman numeral: XIX
  • Words: nineteen

Divisors of the Number 19

  • 19 has 2 positive divisors: 1, 19
    • The sum of the positive divisors is 20
  • 19 has 1 proper divisor: 1
    • The sum of the proper divisors is 1
  • 19 is a deficient number since the sum of the proper divisors is less than 19
  • 19 is not a perfect number
  • 19 is not an abundant number

More Properties of the Number 19

  • 19 is not a square number
  • 19 is not a cube number
  • 19 is not a palindromic number
  • 19 is not a Fibonacci number
  • 19 is not a Lucas number

5:40 pm, Saturday, March 25, 2017 (UTC; +0000)
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