19989901920

Names of 19989901920

• Cardinal: 19989901920 can be written as Nineteen billion, nine hundred eighty-nine million, nine hundred one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.998990192 × 10¹⁰

Factors of 19989901920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 968556

Divisors of 19989901920

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 43 48 60 80 86 96 120 129 160 172 215 240 258 344 430 480 516 645 688 860 1032 1290 1376 1720 2064 2580 3440 4128 5160 6880 10320 20640 968503 1937006 2905509 3874012 4842515 5811018 7748024 9685030 11622036 14527545 15496048 19370060 23244072 29055090 30992096 38740120 41645629 46488144 58110180 77480240 83291258 92976288 116220360 124936887 154960480 166582516 208228145 232440720 249873774 333165032 416456290 464881440 499747548 624684435 666330064 832912580 999495096 1249368870 1332660128 1665825160 1998990192 2498737740 3331650320 3997980384 4997475480 6663300640 9994950960 19989901920
• Sum of all divisors σ(n): 64432634112
• Sum of proper divisors (its aliquot sum) s(n): 44442732192
• 19989901920 is an abundant number, because the sum of its proper divisors (44442732192) is greater than itself. Its abundance is 24452830272

Bases of 19989901920

• Binary: 10010100111011111011011001001100000₂
• Hexadecimal: 0x4A77DB260
• Base-36: 96LGZ1C

Squares and roots of 19989901920

• 19989901920 squared (19989901920²) is 399596178771219686400
• 19989901920 cubed (19989901920³) is 7987888421243467649909157888000
• The square root of 19989901920 is 141385.6496254131
• The cube root of 19989901920 is 2713.9606995825

Scales and comparisons

• 19,989,901,920 seconds is equal to 635 years, 32 weeks, 14 hours, 32 minutes.
• To count from 1 to 19,989,901,920 would take you about one thousand, two hundred seventy-one 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 19989901920 cubic inches would be around 226.2 feet tall.

Recreational maths with 19989901920

• 19989901920 backwards is 02910998991
• The number of decimal digits it has is: 11
• The sum of 19989901920's digits is 57
• More coming soon!