1989105664

Names of 1989105664

• Cardinal: 1989105664 can be written as One billion, nine hundred eighty-nine million, one hundred five thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 1.989105664 × 10⁹

Factors of 1989105664

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 843

Divisors of 1989105664

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 52 56 64 91 104 112 128 169 182 208 224 256 338 364 416 448 512 676 728 821 832 896 1024 1183 1352 1456 1642 1664 1792 2048 2366 2704 2912 3284 3328 3584 4732 5408 5747 5824 6568 6656 7168 9464 10673 10816 11494 11648 13136 13312 14336 18928 21346 21632 22988 23296 26272 26624 37856 42692 43264 45976 46592 52544 74711 75712 85384 86528 91952 93184 105088 138749 149422 151424 170768 173056 183904 186368 210176 277498 298844 302848 341536 346112 367808 420352 554996 597688 605696 683072 735616 840704 971243 1109992 1195376 1211392 1366144 1471232 1681408 1942486 2219984 2390752 2422784 2732288 2942464 3884972 4439968 4781504 5464576 5884928 7769944 8879936 9563008 10929152 11769856 15539888 17759872 19126016 21858304 31079776 35519744 38252032 62159552 71039488 76504064 124319104 142078976 153008128 248638208 284157952 497276416 994552832 1989105664
• Sum of all divisors σ(n): 4927955760
• Sum of proper divisors (its aliquot sum) s(n): 2938850096
• 1989105664 is an abundant number, because the sum of its proper divisors (2938850096) is greater than itself. Its abundance is 949744432

Bases of 1989105664

• Binary: 1110110100011110101100000000000₂
• Hexadecimal: 0x768F5800
• Base-36: WW9FR4

Squares and roots of 1989105664

• 1989105664 squared (1989105664²) is 3956541342556880896
• 1989105664 cubed (1989105664³) is 7869978794330056032406994944
• The square root of 1989105664 is 44599.3908478581
• The cube root of 1989105664 is 1257.6292163011

Scales and comparisons

• 1,989,105,664 seconds is equal to 63 years, 12 weeks, 6 days, 1 hour, 21 minutes, 4 seconds.
• To count from 1 to 1,989,105,664 would take you about one hundred twenty-six 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 1989105664 cubic inches would be around 104.8 feet tall.

Recreational maths with 1989105664

• 1989105664 backwards is 4665019891
• The number of decimal digits it has is: 10
• The sum of 1989105664's digits is 49
• More coming soon!