18318621825

Names of 18318621825

• Cardinal: 18318621825 can be written as Eighteen billion, three hundred eighteen million, six hundred twenty-one thousand, eight hundred twenty-five.

Scientific notation

• Scientific notation: 1.8318621825 × 10¹⁰

Factors of 18318621825

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 369

Divisors of 18318621825

• Number of divisors d(n): 252
• Complete list of divisors:
  1 3 5 7 9 15 21 25 27 35 45 49 63 73 75 81 105 135 147 175 189 219 225 243 245 281 315 365 405 441 511 525 567 657 675 729 735 843 945 1095 1215 1225 1323 1405 1533 1575 1701 1825 1967 1971 2025 2205 2529 2555 2835 3285 3577 3645 3675 3969 4215 4599 4725 5103 5475 5901 5913 6075 6615 7025 7587 7665 8505 9835 9855 10731 11025 11907 12645 12775 13769 13797 14175 16425 17703 17739 17885 18225 19845 20513 21075 22761 22995 25515 29505 29565 32193 33075 35721 37935 38325 41307 41391 42525 49175 49275 53109 53217 53655 59535 61539 63225 68283 68845 68985 88515 88695 89425 96579 99225 102565 113805 114975 123921 124173 127575 143591 147525 147825 159327 160965 178605 184617 189675 204849 206535 206955 265545 266085 268275 289737 297675 307695 341415 344225 344925 371763 372519 430773 442575 443475 477981 482895 512825 553851 569025 619605 620865 717955 796635 804825 869211 893025 923085 1005137 1024245 1032675 1034775 1115289 1292319 1327725 1330425 1433943 1448685 1538475 1661553 1707075 1858815 1862595 2153865 2389905 2414475 2607633 2769255 3015411 3098025 3104325 3345867 3589775 3876957 3983175 4346055 4615425 4984659 5025685 5121225 5576445 6461595 7169715 7243425 8307765 9046233 9294075 9312975 10037601 10769325 11630871 11949525 13038165 13846275 14953977 15077055 16729335 19384785 21730275 24923295 25128425 27138699 27882225 32307975 34892613 35848575 41538825 45231165 50188005 58154355 65190825 74769885 75385275 81416097 83646675 96923925 104677839 124616475 135693495 174463065 226155825 244248291 250940025 290771775 373849425 407080485 523389195 678467475 732744873 872315325 1221241455 2035402425 2616945975 3663724365 6106207275 18318621825
• Sum of all divisors σ(n): 40303015308
• Sum of proper divisors (its aliquot sum) s(n): 21984393483
• 18318621825 is an abundant number, because the sum of its proper divisors (21984393483) is greater than itself. Its abundance is 3665771658

Bases of 18318621825

• Binary: 10001000011110111111111110010000001₂
• Hexadecimal: 0x443DFFC81
• Base-36: 8EYFN29

Squares and roots of 18318621825

• 18318621825 squared (18318621825²) is 335571905567366330625
• 18318621825 cubed (18318621825³) is 6147214833183195871957290890625
• The square root of 18318621825 is 135346.3033296439
• The cube root of 18318621825 is 2636.1144739509

Scales and comparisons

• 18,318,621,825 seconds is equal to 582 years, 24 weeks, 5 days, 2 hours, 3 minutes, 45 seconds.
• To count from 1 to 18,318,621,825 would take you about one thousand, one hundred sixty-four 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 18318621825 cubic inches would be around 219.7 feet tall.

Recreational maths with 18318621825

• 18318621825 backwards is 52812681381
• 18318621825 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18318621825's digits is 45
• More coming soon!