19989517938

Names of 19989517938

• Cardinal: 19989517938 can be written as Nineteen billion, nine hundred eighty-nine million, five hundred seventeen thousand, nine hundred thirty-eight.

Scientific notation

• Scientific notation: 1.9989517938 × 10¹⁰

Factors of 19989517938

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3372

Divisors of 19989517938

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 13 26 29 39 41 58 67 78 82 87 123 134 174 201 246 377 402 533 754 871 1066 1131 1189 1599 1742 1943 2262 2378 2613 2747 3198 3217 3567 3886 5226 5494 5829 6434 7134 8241 9651 11658 15457 16482 19302 25259 30914 35711 41821 46371 50518 71422 75777 79663 83642 92742 93293 107133 125463 131897 151554 159326 186586 214266 215539 238989 250926 263794 279879 395691 431078 477978 559758 646617 791382 1035619 1212809 1293234 1714661 2071238 2425618 2802007 3106857 3429322 3638427 3825013 5143983 5604014 6213714 6250631 7276854 7650026 8406021 8837099 10287966 11475039 12501262 16812042 17674198 18751893 22950078 26511297 37503786 49725169 53022594 81258203 99450338 114882287 149175507 162516406 229764574 243774609 256275871 298351014 344646861 487549218 512551742 689293722 768827613 1537655226 3331586323 6663172646 9994758969 19989517938
• Sum of all divisors σ(n): 46320664320
• Sum of proper divisors (its aliquot sum) s(n): 26331146382
• 19989517938 is an abundant number, because the sum of its proper divisors (26331146382) is greater than itself. Its abundance is 6341628444

Bases of 19989517938

• Binary: 10010100111011101111101011001110010₂
• Hexadecimal: 0x4A777D672
• Base-36: 96L8QR6

Squares and roots of 19989517938

• 19989517938 squared (19989517938²) is 399580827393623771844
• 19989517938 cubed (19989517938³) is 7987428116865724174098857337672
• The square root of 19989517938 is 141384.2916946575
• The cube root of 19989517938 is 2713.9433221631

Scales and comparisons

• 19,989,517,938 seconds is equal to 635 years, 31 weeks, 3 days, 3 hours, 52 minutes, 18 seconds.
• To count from 1 to 19,989,517,938 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 19989517938 cubic inches would be around 226.2 feet tall.

Recreational maths with 19989517938

• 19989517938 backwards is 83971598991
• The number of decimal digits it has is: 11
• The sum of 19989517938's digits is 69
• More coming soon!