18540840990

Names of 18540840990

• Cardinal: 18540840990 can be written as Eighteen billion, five hundred forty million, eight hundred forty thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.854084099 × 10¹⁰

Factors of 18540840990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 26977

Divisors of 18540840990

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 30 35 42 49 67 70 98 105 134 147 201 210 245 294 335 343 402 469 490 670 686 735 938 1005 1029 1407 1470 1715 2010 2058 2345 2814 3283 3430 4690 5145 6566 7035 9849 10290 14070 16415 19698 22981 26893 32830 45962 49245 53786 68943 80679 98490 114905 134465 137886 161358 188251 229810 268930 344715 376502 403395 564753 689430 806790 941255 1129506 1317757 1801831 1882510 2635514 2823765 3603662 3953271 5405493 5647530 6588785 7906542 9009155 9224299 10810986 12612817 13177570 18018310 18448598 19766355 25225634 27027465 27672897 37838451 39532710 46121495 54054930 55345794 63064085 75676902 88289719 92242990 126128170 138364485 176579438 189192255 264869157 276728970 378384510 441448595 529738314 618028033 882897190 1236056066 1324345785 1854084099 2648691570 3090140165 3708168198 6180280330 9270420495 18540840990
• Sum of all divisors σ(n): 52669209600
• Sum of proper divisors (its aliquot sum) s(n): 34128368610
• 18540840990 is an abundant number, because the sum of its proper divisors (34128368610) is greater than itself. Its abundance is 15587527620

Bases of 18540840990

• Binary: 10001010001000111101100100000011110₂
• Hexadecimal: 0x4511EC81E
• Base-36: 8IMQKGU

Squares and roots of 18540840990

• 18540840990 squared (18540840990²) is 343762784616464180100
• 18540840990 cubed (18540840990³) is 6373651127853480499264822299000
• The square root of 18540840990 is 136164.7567838315
• The cube root of 18540840990 is 2646.7310345393

Scales and comparisons

• 18,540,840,990 seconds is equal to 589 years, 28 weeks, 1 day, 1 hour, 36 minutes, 30 seconds.
• To count from 1 to 18,540,840,990 would take you about one thousand, one hundred seventy-nine 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 18540840990 cubic inches would be around 220.6 feet tall.

Recreational maths with 18540840990

• 18540840990 backwards is 09904804581
• The number of decimal digits it has is: 11
• The sum of 18540840990's digits is 48
• More coming soon!