18263993979

Names of 18263993979

• Cardinal: 18263993979 can be written as Eighteen billion, two hundred sixty-three million, nine hundred ninety-three thousand, nine hundred seventy-nine.

Scientific notation

• Scientific notation: 1.8263993979 × 10¹⁰

Factors of 18263993979

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 57

Divisors of 18263993979

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 7 11 17 19 21 33 49 51 57 77 119 121 133 147 187 209 231 289 323 357 363 399 539 561 627 833 847 867 931 969 1309 1331 1463 1617 2023 2057 2261 2299 2499 2541 2793 3179 3553 3927 3993 4389 4913 5491 5929 6069 6171 6783 6897 9163 9317 9537 10241 10659 14161 14399 14739 15827 16093 16473 17787 22253 22627 24871 25289 27489 27951 30723 34391 34969 38437 39083 42483 43197 47481 48279 54043 60401 65219 66759 67881 74613 75867 93347 100793 103173 104907 112651 115311 117249 155771 158389 162129 174097 177023 181203 195657 240737 244783 269059 273581 280041 302379 337953 378301 384659 422807 429913 467313 475167 522291 531069 594473 653429 664411 722211 734349 807177 820743 1026817 1108723 1134903 1153977 1239161 1268421 1289739 1713481 1783419 1915067 1960287 1993233 2648107 2692613 2959649 3009391 3080451 3326169 3717483 4161311 4574003 4650877 5140443 5745201 6539203 7187719 7308521 7944321 8077839 8878947 9028173 11294987 12483933 13722009 13952631 18848291 19617609 21065737 21563157 21925563 29129177 32556139 33884961 45774421 50314033 51159647 56544873 63197211 79064909 87387531 97668417 124244857 137323263 150942099 153478941 237194727 320420947 358117529 372734571 553454363 869713999 961262841 1074352587 1660363089 2609141997 6087997993 18263993979
• Sum of all divisors σ(n): 34847884800
• Sum of proper divisors (its aliquot sum) s(n): 16583890821
• 18263993979 is a deficient number, because the sum of its proper divisors (16583890821) is less than itself. Its deficiency is 1680103158

Bases of 18263993979

• Binary: 10001000000100111100110111001111011₂
• Hexadecimal: 0x4409E6E7B
• Base-36: 8E1WRY3

Squares and roots of 18263993979

• 18263993979 squared (18263993979²) is 333573476064948252441
• 18263993979 cubed (18263993979³) is 6092383958404315495528996052739
• The square root of 18263993979 is 135144.3449760293
• The cube root of 18263993979 is 2633.4914848009

Scales and comparisons

• 18,263,993,979 seconds is equal to 580 years, 38 weeks, 2 days, 19 hours, 39 minutes, 39 seconds.
• To count from 1 to 18,263,993,979 would take you about one thousand, one hundred sixty-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 18263993979 cubic inches would be around 219.5 feet tall.

Recreational maths with 18263993979

• 18263993979 backwards is 97939936281
• The number of decimal digits it has is: 11
• The sum of 18263993979's digits is 66
• More coming soon!