18081668664

Names of 18081668664

• Cardinal: 18081668664 can be written as Eighteen billion, eighty-one million, six hundred sixty-eight thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 1.8081668664 × 10¹⁰

Factors of 18081668664

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1733

Divisors of 18081668664

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 29 36 54 58 72 87 108 116 174 216 232 261 348 522 696 783 1044 1566 1699 2088 3132 3398 5097 6264 6796 10194 13592 15291 20388 30582 40776 45873 49271 61164 91746 98542 122328 147813 183492 197084 295626 366984 394168 443439 591252 886878 1182504 1330317 1773756 2660634 2886601 3547512 5321268 5773202 8659803 10642536 11546404 17319606 23092808 25979409 34639212 51958818 69278424 77938227 83711429 103917636 155876454 167422858 207835272 251134287 311752908 334845716 502268574 623505816 669691432 753402861 1004537148 1506805722 2009074296 2260208583 3013611444 4520417166 6027222888 9040834332 18081668664
• Sum of all divisors σ(n): 51989418000
• Sum of proper divisors (its aliquot sum) s(n): 33907749336
• 18081668664 is an abundant number, because the sum of its proper divisors (33907749336) is greater than itself. Its abundance is 15826080672

Bases of 18081668664

• Binary: 10000110101110000000101111000111000₂
• Hexadecimal: 0x435C05E38
• Base-36: 8B1CWU0

Squares and roots of 18081668664

• 18081668664 squared (18081668664²) is 326946741674679544896
• 18081668664 cubed (18081668664³) is 5911742653735956009187784338944
• The square root of 18081668664 is 134468.0953386341
• The cube root of 18081668664 is 2624.6989787063

Scales and comparisons

• 18,081,668,664 seconds is equal to 574 years, 48 weeks, 6 days, 13 hours, 44 minutes, 24 seconds.
• To count from 1 to 18,081,668,664 would take you about one thousand, one hundred forty-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 18081668664 cubic inches would be around 218.7 feet tall.

Recreational maths with 18081668664

• 18081668664 backwards is 46686618081
• 18081668664 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18081668664's digits is 54
• More coming soon!