18399116745

Names of 18399116745

• Cardinal: 18399116745 can be written as Eighteen billion, three hundred ninety-nine million, one hundred sixteen thousand, seven hundred forty-five.

Scientific notation

• Scientific notation: 1.8399116745 × 10¹⁰

Factors of 18399116745

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 373

Divisors of 18399116745

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 5 9 15 17 31 41 45 51 85 93 123 127 149 153 155 205 255 279 369 381 447 465 527 615 635 697 745 765 1143 1271 1341 1395 1581 1845 1905 2091 2159 2235 2533 2635 3485 3813 3937 4619 4743 5207 5715 6109 6273 6355 6477 6705 7599 7905 10455 10795 11439 11811 12665 13857 15621 18327 18923 19065 19431 19685 21607 22797 23095 23715 26035 30545 31365 32385 35433 37995 41571 46863 54981 56769 57195 59055 64821 66929 69285 78105 78523 88519 91635 94615 97155 103853 108035 113985 161417 170307 177165 189379 194463 200787 207855 234315 235569 265557 274905 283845 311559 321691 324105 334645 392615 442595 484251 519265 568137 586613 602361 706707 775843 796671 807085 851535 934677 946895 965073 972315 1003935 1177845 1327785 1452753 1557795 1608455 1704411 1759839 2327529 2421255 2744089 2840685 2895219 2933065 3011805 3219443 3533535 3879215 3983355 4673385 4825365 5279517 6982587 7263765 8232267 8522055 8799195 9658329 9972421 11637645 13189331 13720445 14476095 16097215 24051133 24696801 26397585 28974987 29917263 34912935 39567993 41161335 48291645 49862105 65946655 72153399 89751789 118703979 120255665 123484005 144874935 149586315 197839965 216460197 360766995 408869261 448758945 593519895 1082300985 1226607783 2044346305 3679823349 6133038915 18399116745
• Sum of all divisors σ(n): 36229939200
• Sum of proper divisors (its aliquot sum) s(n): 17830822455
• 18399116745 is a deficient number, because the sum of its proper divisors (17830822455) is less than itself. Its deficiency is 568294290

Bases of 18399116745

• Binary: 10001001000101011000011110111001001₂
• Hexadecimal: 0x448AC3DC9
• Base-36: 8GACXC9

Squares and roots of 18399116745

• 18399116745 squared (18399116745²) is 338527496996139395025
• 18399116745 cubed (18399116745³) is 6228606938624605543358647193625
• The square root of 18399116745 is 135643.3439023087
• The cube root of 18399116745 is 2639.9700000895

Scales and comparisons

• 18,399,116,745 seconds is equal to 585 years, 1 week, 5 days, 17 hours, 45 minutes, 45 seconds.
• To count from 1 to 18,399,116,745 would take you about one thousand, one hundred seventy 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 18399116745 cubic inches would be around 220 feet tall.

Recreational maths with 18399116745

• 18399116745 backwards is 54761199381
• The number of decimal digits it has is: 11
• The sum of 18399116745's digits is 54
• More coming soon!