18431478730

Names of 18431478730

• Cardinal: 18431478730 can be written as Eighteen billion, four hundred thirty-one million, four hundred seventy-eight thousand, seven hundred thirty.

Scientific notation

• Scientific notation: 1.843147873 × 10¹⁰

Factors of 18431478730

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 804

Divisors of 18431478730

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 5 7 10 14 31 35 62 70 73 146 155 217 307 310 365 379 434 511 614 730 758 1022 1085 1535 1895 2149 2170 2263 2555 2653 3070 3790 4298 4526 5110 5306 9517 10745 11315 11749 13265 15841 19034 21490 22411 22630 23498 26530 27667 31682 44822 47585 55334 58745 66619 79205 82243 95170 112055 116353 117490 133238 138335 156877 158410 164486 193669 224110 232706 276670 313754 333095 387338 411215 581765 666190 694741 784385 814471 822430 857677 968345 1163530 1389482 1568770 1628942 1715354 1936690 3473705 3606943 4072355 4288385 4863187 6003739 6947410 7213886 8144710 8493769 8576770 9726374 12007478 16987538 18034715 24315935 25248601 30018695 36069430 42468845 48631870 50497202 59456383 60037390 84937690 118912766 126243005 252486010 263306839 297281915 526613678 594563830 1316534195 1843147873 2633068390 3686295746 9215739365 18431478730
• Sum of all divisors σ(n): 39909703680
• Sum of proper divisors (its aliquot sum) s(n): 21478224950
• 18431478730 is an abundant number, because the sum of its proper divisors (21478224950) is greater than itself. Its abundance is 3046746220

Bases of 18431478730

• Binary: 10001001010100110100000101111001010₂
• Hexadecimal: 0x44A9A0BCA
• Base-36: 8GTMK0A

Squares and roots of 18431478730

• 18431478730 squared (18431478730²) is 339719408174442412900
• 18431478730 cubed (18431478730³) is 6261531045935423462976227617000
• The square root of 18431478730 is 135762.5822161615
• The cube root of 18431478730 is 2641.5168973239

Scales and comparisons

• 18,431,478,730 seconds is equal to 586 years, 3 weeks, 2 days, 7 hours, 12 minutes, 10 seconds.
• To count from 1 to 18,431,478,730 would take you about one thousand, one hundred seventy-two 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 18431478730 cubic inches would be around 220.1 feet tall.

Recreational maths with 18431478730

• 18431478730 backwards is 03787413481
• The number of decimal digits it has is: 11
• The sum of 18431478730's digits is 46
• More coming soon!