18187812864

Names of 18187812864

• Cardinal: 18187812864 can be written as Eighteen billion, one hundred eighty-seven million, eight hundred twelve thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 1.8187812864 × 10¹⁰

Factors of 18187812864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 22
• Sum of prime factors: 611

Divisors of 18187812864

• Number of divisors d(n): 228
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 64 72 78 96 104 117 128 144 156 192 208 234 256 288 312 384 416 468 512 576 593 624 768 832 936 1024 1152 1186 1248 1536 1664 1779 1872 2048 2304 2372 2496 3072 3328 3558 3744 4096 4608 4744 4992 5337 6144 6656 7116 7488 7709 8192 9216 9488 9984 10674 12288 13312 14232 14976 15418 16384 18432 18976 19968 21348 23127 24576 26624 28464 29952 30836 32768 36864 37952 39936 42696 46254 49152 53248 56928 59904 61672 65536 69381 73728 75904 79872 85392 92508 98304 106496 113856 119808 123344 131072 138762 147456 151808 159744 170784 185016 196608 212992 227712 239616 246688 262144 277524 294912 303616 319488 341568 370032 393216 425984 455424 479232 493376 555048 589824 607232 638976 683136 740064 786432 851968 910848 958464 986752 1110096 1179648 1214464 1277952 1366272 1480128 1703936 1821696 1916928 1973504 2220192 2359296 2428928 2555904 2732544 2960256 3407872 3643392 3833856 3947008 4440384 4857856 5111808 5465088 5920512 7286784 7667712 7894016 8880768 9715712 10223616 10930176 11841024 14573568 15335424 15788032 17761536 19431424 21860352 23682048 29147136 30670848 31576064 35523072 38862848 43720704 47364096 58294272 63152128 71046144 77725696 87441408 94728192 116588544 126304256 142092288 155451392 174882816 189456384 233177088 252608512 284184576 349765632 378912768 466354176 505217024 568369152 699531264 757825536 1010434048 1136738304 1399062528 1515651072 2020868096 2273476608 3031302144 4546953216 6062604288 9093906432 18187812864
• Sum of all divisors σ(n): 56679618996
• Sum of proper divisors (its aliquot sum) s(n): 38491806132
• 18187812864 is an abundant number, because the sum of its proper divisors (38491806132) is greater than itself. Its abundance is 20303993268

Bases of 18187812864

• Binary: 10000111100000101000000000000000000₂
• Hexadecimal: 0x43C140000
• Base-36: 8CSJY80

Squares and roots of 18187812864

• 18187812864 squared (18187812864²) is 330796536775883882496
• 18187812864 cubed (18187812864³) is 6016465506939069963031013228544
• The square root of 18187812864 is 134862.1995371571
• The cube root of 18187812864 is 2629.8248551603

Scales and comparisons

• 18,187,812,864 seconds is equal to 578 years, 16 weeks, 3 days, 2 hours, 14 minutes, 24 seconds.
• To count from 1 to 18,187,812,864 would take you about one thousand, one hundred fifty-six 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 18187812864 cubic inches would be around 219.2 feet tall.

Recreational maths with 18187812864

• 18187812864 backwards is 46821878181
• The number of decimal digits it has is: 11
• The sum of 18187812864's digits is 54
• More coming soon!