18531350640

Names of 18531350640

• Cardinal: 18531350640 can be written as Eighteen billion, five hundred thirty-one million, three hundred fifty thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.853135064 × 10¹⁰

Factors of 18531350640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 779960

Divisors of 18531350640

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 33 36 40 44 45 48 54 55 60 66 72 80 88 90 99 108 110 120 132 135 144 165 176 180 198 216 220 240 264 270 297 330 360 396 432 440 495 528 540 594 660 720 792 880 990 1080 1188 1320 1485 1584 1980 2160 2376 2640 2970 3960 4752 5940 7920 11880 23760 779939 1559878 2339817 3119756 3899695 4679634 6239512 7019451 7799390 8579329 9359268 11699085 12479024 14038902 15598780 17158658 18718536 21058353 23398170 25737987 28077804 31197560 34317316 35097255 37437072 42116706 42896645 46796340 51475974 56155608 62395120 68634632 70194510 77213961 84233412 85793290 93592680 102951948 105291765 112311216 128689935 137269264 140389020 154427922 168466824 171586580 187185360 205903896 210583530 231641883 257379870 280778040 308855844 336933648 343173160 386069805 411807792 421167060 463283766 514759740 561556080 617711688 686346320 772139610 842334120 926567532 1029519480 1158209415 1235423376 1544279220 1684668240 1853135064 2059038960 2316418830 3088558440 3706270128 4632837660 6177116880 9265675320 18531350640
• Sum of all divisors σ(n): 69633043200
• Sum of proper divisors (its aliquot sum) s(n): 51101692560
• 18531350640 is an abundant number, because the sum of its proper divisors (51101692560) is greater than itself. Its abundance is 32570341920

Bases of 18531350640

• Binary: 10001010000100011011111100001110000₂
• Hexadecimal: 0x4508DF870
• Base-36: 8IH35O0

Squares and roots of 18531350640

• 18531350640 squared (18531350640²) is 343410956542628409600
• 18531350640 cubed (18531350640³) is 6363868849309249165523142144000
• The square root of 18531350640 is 136129.9035480449
• The cube root of 18531350640 is 2646.2793705469

Scales and comparisons

• 18,531,350,640 seconds is equal to 589 years, 12 weeks, 3 days, 5 hours, 24 minutes.
• To count from 1 to 18,531,350,640 would take you about one thousand, one hundred seventy-eight 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 18531350640 cubic inches would be around 220.5 feet tall.

Recreational maths with 18531350640

• 18531350640 backwards is 04605313581
• 18531350640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18531350640's digits is 36
• More coming soon!