18509

Names of 18509

• Cardinal: 18509 can be written as Eighteen thousand, five hundred nine.

Scientific notation

• Scientific notation: 1.8509 × 10⁴

Factors of 18509

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 306

Divisors of 18509

• Number of divisors d(n): 4
• Complete list of divisors:
  1 83 223 18509
• Sum of all divisors σ(n): 18816
• Sum of proper divisors (its aliquot sum) s(n): 307
• 18509 is a deficient number, because the sum of its proper divisors (307) is less than itself. Its deficiency is 18202

Bases of 18509

• Binary: 100100001001101₂
• Hexadecimal: 0x484D
• Base-36: EA5

Squares and roots of 18509

• 18509 squared (18509²) is 342583081
• 18509 cubed (18509³) is 6340870246229
• The square root of 18509 is 136.0477857225
• The cube root of 18509 is 26.4521505107

Scales and comparisons

• 18,509 seconds is equal to 5 hours, 8 minutes, 29 seconds.
• To count from 1 to 18,509 would take you about five hours.

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 18509 cubic inches would be around 2.2 feet tall.

Recreational maths with 18509

• 18509 backwards is 90581
• The number of decimal digits it has is: 5
• The sum of 18509's digits is 23
• More coming soon!