18491041728

Names of 18491041728

• Cardinal: 18491041728 can be written as Eighteen billion, four hundred ninety-one million, forty-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8491041728 × 10¹⁰

Factors of 18491041728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2398

Divisors of 18491041728

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 32 36 46 48 64 69 72 92 96 138 144 184 192 207 276 288 368 414 552 576 736 828 1093 1104 1277 1472 1656 2186 2208 2554 3279 3312 3831 4372 4416 5108 6558 6624 7662 8744 9837 10216 11493 13116 13248 15324 17488 19674 20432 22986 25139 26232 29371 30648 34976 39348 40864 45972 50278 52464 58742 61296 69952 75417 78696 81728 88113 91944 100556 104928 117484 122592 150834 157392 176226 183888 201112 209856 226251 234968 245184 264339 301668 314784 352452 367776 402224 452502 469936 528678 603336 629568 704904 735552 804448 905004 939872 1057356 1206672 1395761 1409808 1608896 1810008 1879744 2114712 2413344 2791522 2819616 3620016 4187283 4229424 4826688 5583044 5639232 7240032 8374566 8458848 11166088 12561849 14480064 16749132 16917696 22332176 25123698 32102503 33498264 44664352 50247396 64205006 66996528 89328704 96307509 100494792 128410012 133993056 192615018 200989584 256820024 267986112 288922527 385230036 401979168 513640048 577845054 770460072 803958336 1027280096 1155690108 1540920144 2054560192 2311380216 3081840288 4622760432 6163680576 9245520864 18491041728
• Sum of all divisors σ(n): 55399582368
• Sum of proper divisors (its aliquot sum) s(n): 36908540640
• 18491041728 is an abundant number, because the sum of its proper divisors (36908540640) is greater than itself. Its abundance is 18417498912

Bases of 18491041728

• Binary: 10001001110001001101110011111000000₂
• Hexadecimal: 0x44E26E7C0
• Base-36: 8HT3740

Squares and roots of 18491041728

• 18491041728 squared (18491041728²) is 341918624186637225984
• 18491041728 cubed (18491041728³) is 6322431547415459005668309860352
• The square root of 18491041728 is 135981.7698369895
• The cube root of 18491041728 is 2644.3592716667

Scales and comparisons

• 18,491,041,728 seconds is equal to 587 years, 49 weeks, 5 days, 16 hours, 28 minutes, 48 seconds.
• To count from 1 to 18,491,041,728 would take you about one thousand, one hundred seventy-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 18491041728 cubic inches would be around 220.4 feet tall.

Recreational maths with 18491041728

• 18491041728 backwards is 82714019481
• The number of decimal digits it has is: 11
• The sum of 18491041728's digits is 45
• More coming soon!