18640138572

Names of 18640138572

• Cardinal: 18640138572 can be written as Eighteen billion, six hundred forty million, one hundred thirty-eight thousand, five hundred seventy-two.

Scientific notation

• Scientific notation: 1.8640138572 × 10¹⁰

Factors of 18640138572

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 89

Divisors of 18640138572

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 11 12 18 22 33 36 44 66 73 99 121 132 146 198 219 242 292 363 396 438 484 657 726 803 876 1089 1314 1331 1452 1606 2178 2409 2628 2662 3212 3993 4356 4818 5324 5329 7227 7986 8833 9636 10658 11979 14454 15972 15987 17666 21316 23958 26499 28908 31974 35332 47916 47961 52998 58619 63948 79497 95922 97163 105996 117238 158994 175857 191844 194326 234476 291489 317988 351714 388652 389017 527571 582978 644809 703428 778034 874467 1055142 1165956 1167051 1289618 1556068 1748934 1934427 2110284 2334102 2579236 3497868 3501153 3868854 4279187 4668204 5803281 7002306 7092899 7737708 8558374 11606562 12837561 14004612 14185798 17116748 21278697 23213124 25675122 28371596 38512683 42557394 47071057 51350244 63836091 77025366 85114788 94142114 127672182 141213171 154050732 188284228 255344364 282426342 423639513 517781627 564852684 847279026 1035563254 1553344881 1694558052 2071126508 3106689762 4660034643 6213379524 9320069286 18640138572
• Sum of all divisors σ(n): 52546210080
• Sum of proper divisors (its aliquot sum) s(n): 33906071508
• 18640138572 is an abundant number, because the sum of its proper divisors (33906071508) is greater than itself. Its abundance is 15265932936

Bases of 18640138572

• Binary: 10001010111000010011111000101001100₂
• Hexadecimal: 0x45709F14C
• Base-36: 8K9UUZ0

Squares and roots of 18640138572

• 18640138572 squared (18640138572²) is 347454765983362199184
• 18640138572 cubed (18640138572³) is 6476604985431703239256425325248
• The square root of 18640138572 is 136528.8928102767
• The cube root of 18640138572 is 2651.4475808623

Scales and comparisons

• 18,640,138,572 seconds is equal to 592 years, 36 weeks, 2 days, 8 hours, 16 minutes, 12 seconds.
• To count from 1 to 18,640,138,572 would take you about one thousand, one hundred eighty-five 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 18640138572 cubic inches would be around 221 feet tall.

Recreational maths with 18640138572

• 18640138572 backwards is 27583104681
• The number of decimal digits it has is: 11
• The sum of 18640138572's digits is 45
• More coming soon!