18439780212

Names of 18439780212

• Cardinal: 18439780212 can be written as Eighteen billion, four hundred thirty-nine million, seven hundred eighty thousand, two hundred twelve.

Scientific notation

• Scientific notation: 1.8439780212 × 10¹⁰

Factors of 18439780212

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4717

Divisors of 18439780212

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 19 21 28 36 38 42 57 63 76 84 114 126 133 171 228 252 266 342 399 532 684 798 1063 1197 1596 2126 2394 3189 3623 4252 4788 6378 7246 7441 9567 10869 12756 14492 14882 19134 20197 21738 22323 25361 29764 32607 38268 40394 43476 44646 50722 60591 65214 66969 68837 76083 80788 89292 101444 121182 130428 133938 137674 141379 152166 181773 206511 228249 242364 267876 275348 282758 304332 363546 413022 424137 456498 481859 565516 619533 727092 826044 848274 912996 963718 1239066 1272411 1445577 1696548 1927436 2478132 2544822 2891154 3851249 4336731 5089644 5782308 7702498 8673462 11553747 15404996 17346924 23107494 26958743 34661241 46214988 53917486 69322482 73173731 80876229 107834972 138644964 146347462 161752458 219521193 242628687 292694924 323504916 439042386 485257374 512216117 658563579 878084772 970514748 1024432234 1317127158 1536648351 2048864468 2634254316 3073296702 4609945053 6146593404 9219890106 18439780212
• Sum of all divisors σ(n): 56142428160
• Sum of proper divisors (its aliquot sum) s(n): 37702647948
• 18439780212 is an abundant number, because the sum of its proper divisors (37702647948) is greater than itself. Its abundance is 19262867736

Bases of 18439780212

• Binary: 10001001011000110001011011101110100₂
• Hexadecimal: 0x44B18B774
• Base-36: 8GYKHH0

Squares and roots of 18439780212

• 18439780212 squared (18439780212²) is 340025494266866764944
• 18439780212 cubed (18439780212³) is 6269995380757689219454826488128
• The square root of 18439780212 is 135793.1523015799
• The cube root of 18439780212 is 2641.9134148605

Scales and comparisons

• 18,439,780,212 seconds is equal to 586 years, 17 weeks, 9 hours, 10 minutes, 12 seconds.
• To count from 1 to 18,439,780,212 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 18439780212 cubic inches would be around 220.2 feet tall.

Recreational maths with 18439780212

• 18439780212 backwards is 21208793481
• The number of decimal digits it has is: 11
• The sum of 18439780212's digits is 45
• More coming soon!