18364137920

Names of 18364137920

• Cardinal: 18364137920 can be written as Eighteen billion, three hundred sixty-four million, one hundred thirty-seven thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.836413792 × 10¹⁰

Factors of 18364137920

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 57387938

Divisors of 18364137920

• Number of divisors d(n): 28
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 160 320 57387931 114775862 229551724 286939655 459103448 573879310 918206896 1147758620 1836413792 2295517240 3672827584 4591034480 9182068960 18364137920
• Sum of all divisors σ(n): 43729604184
• Sum of proper divisors (its aliquot sum) s(n): 25365466264
• 18364137920 is an abundant number, because the sum of its proper divisors (25365466264) is greater than itself. Its abundance is 7001328344

Bases of 18364137920

• Binary: 10001000110100101101000000111000000₂
• Hexadecimal: 0x4469681C0
• Base-36: 8FPJ7I8

Squares and roots of 18364137920

• 18364137920 squared (18364137920²) is 337241561544781926400
• 18364137920 cubed (18364137920³) is 6193150548564543552732889088000
• The square root of 18364137920 is 135514.3458088479
• The cube root of 18364137920 is 2638.2959771815

Scales and comparisons

• 18,364,137,920 seconds is equal to 583 years, 47 weeks, 6 days, 21 hours, 25 minutes, 20 seconds.
• To count from 1 to 18,364,137,920 would take you about one thousand, one hundred sixty-seven years!

  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 18364137920 cubic inches would be around 219.9 feet tall.

Recreational maths with 18364137920

• 18364137920 backwards is 02973146381
• The number of decimal digits it has is: 11
• The sum of 18364137920's digits is 44
• More coming soon!