18007039145

Names of 18007039145

• Cardinal: 18007039145 can be written as Eighteen billion, seven million, thirty-nine thousand, one hundred forty-five.

Scientific notation

• Scientific notation: 1.8007039145 × 10¹⁰

Factors of 18007039145

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 5138235

Divisors of 18007039145

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 701 3505 5137529 25687645 3601407829 18007039145
• Sum of all divisors σ(n): 21639276360
• Sum of proper divisors (its aliquot sum) s(n): 3632237215
• 18007039145 is a deficient number, because the sum of its proper divisors (3632237215) is less than itself. Its deficiency is 14374801930

Bases of 18007039145

• Binary: 10000110001010011011001110010101001₂
• Hexadecimal: 0x4314D9CA9
• Base-36: 89SXCBT

Squares and roots of 18007039145

• 18007039145 squared (18007039145²) is 324253458769562331025
• 18007039145 cubed (18007039145³) is 5838844724965152429284622973625
• The square root of 18007039145 is 134190.3094303015
• The cube root of 18007039145 is 2621.0829752173

Scales and comparisons

• 18,007,039,145 seconds is equal to 572 years, 29 weeks, 3 days, 19 hours, 19 minutes, 5 seconds.
• To count from 1 to 18,007,039,145 would take you about one thousand, one hundred forty-five 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 18007039145 cubic inches would be around 218.4 feet tall.

Recreational maths with 18007039145

• 18007039145 backwards is 54193070081
• The number of decimal digits it has is: 11
• The sum of 18007039145's digits is 38
• More coming soon!