18509972418

Names of 18509972418

• Cardinal: 18509972418 can be written as Eighteen billion, five hundred nine million, nine hundred seventy-two thousand, four hundred eighteen.

Scientific notation

• Scientific notation: 1.8509972418 × 10¹⁰

Factors of 18509972418

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1106

Divisors of 18509972418

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 42 54 63 73 81 126 146 162 189 219 243 378 438 486 511 567 657 1021 1022 1134 1314 1533 1701 1971 2042 3063 3066 3402 3942 4599 5329 5913 6126 7147 9189 9198 10658 11826 13797 14294 15987 17739 18378 21441 27567 27594 31974 35478 37303 41391 42882 47961 55134 64323 74533 74606 82701 82782 95922 111909 124173 128646 143883 149066 165402 192969 223599 223818 248103 248346 287766 335727 385938 431649 447198 496206 521731 578907 670797 671454 863298 1007181 1043462 1157814 1294947 1341594 1565193 1736721 2012391 2014362 2589894 3021543 3130386 3473442 4024782 4695579 5440909 6037173 6043086 9064629 9391158 10881818 12074346 14086737 16322727 18111519 18129258 28173474 32645454 36223038 38086363 42260211 48968181 76172726 84520422 97936362 114259089 126780633 146904543 228518178 253561266 293809086 342777267 440713629 685554534 881427258 1028331801 1322140887 2056663602 2644281774 3084995403 6169990806 9254986209 18509972418
• Sum of all divisors σ(n): 48239021376
• Sum of proper divisors (its aliquot sum) s(n): 29729048958
• 18509972418 is an abundant number, because the sum of its proper divisors (29729048958) is greater than itself. Its abundance is 11219076540

Bases of 18509972418

• Binary: 10001001111010001111100001111000010₂
• Hexadecimal: 0x44F47C3C2
• Base-36: 8I4CY4I

Squares and roots of 18509972418

• 18509972418 squared (18509972418²) is 342619078915120766724
• 18509972418 cubed (18509972418³) is 6341869700599450755200252218632
• The square root of 18509972418 is 136051.3594860411
• The cube root of 18509972418 is 2645.2613746563

Scales and comparisons

• 18,509,972,418 seconds is equal to 588 years, 29 weeks, 19 hours, 18 seconds.
• To count from 1 to 18,509,972,418 would take you about one thousand, one hundred seventy-seven 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 18509972418 cubic inches would be around 220.4 feet tall.

Recreational maths with 18509972418

• 18509972418 backwards is 81427990581
• 18509972418 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18509972418's digits is 54
• More coming soon!