18439451472

Names of 18439451472

• Cardinal: 18439451472 can be written as Eighteen billion, four hundred thirty-nine million, four hundred fifty-one thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 1.8439451472 × 10¹⁰

Factors of 18439451472

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 19655

Divisors of 18439451472

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 17 24 26 34 39 48 51 52 68 78 89 102 104 136 156 178 204 208 221 267 272 312 356 408 442 534 624 663 712 816 884 1068 1157 1326 1424 1513 1768 2136 2314 2652 3026 3471 3536 4272 4539 4628 5304 6052 6942 9078 9256 10608 12104 13884 18156 18512 19531 19669 24208 27768 36312 39062 39338 55536 58593 59007 72624 78124 78676 117186 118014 156248 157352 234372 236028 253903 312496 314704 332027 468744 472056 507806 664054 761709 937488 944112 996081 1015612 1328108 1523418 1738259 1992162 2031224 2656216 3046836 3476518 3984324 4062448 4316351 5214777 5312432 6093672 6953036 7968648 8632702 10429554 12187344 12949053 13906072 15937296 17265404 20859108 22597367 25898106 27812144 29550403 34530808 41718216 45194734 51796212 59100806 67792101 69061616 83436432 88651209 90389468 103592424 118201612 135584202 177302418 180778936 207184848 236403224 271168404 354604836 361557872 384155239 472806448 542336808 709209672 768310478 1084673616 1152465717 1418419344 1536620956 2304931434 3073241912 4609862868 6146483824 9219725736 18439451472
• Sum of all divisors σ(n): 54930234240
• Sum of proper divisors (its aliquot sum) s(n): 36490782768
• 18439451472 is an abundant number, because the sum of its proper divisors (36490782768) is greater than itself. Its abundance is 18051331296

Bases of 18439451472

• Binary: 10001001011000100111011001101010000₂
• Hexadecimal: 0x44B13B350
• Base-36: 8GYDFTC

Squares and roots of 18439451472

• 18439451472 squared (18439451472²) is 340013370588242966784
• 18439451472 cubed (18439451472³) is 6269660046793058279758875906048
• The square root of 18439451472 is 135791.9418522321
• The cube root of 18439451472 is 2641.8977149667

Scales and comparisons

• 18,439,451,472 seconds is equal to 586 years, 16 weeks, 3 days, 13 hours, 51 minutes, 12 seconds.
• To count from 1 to 18,439,451,472 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 18439451472 cubic inches would be around 220.2 feet tall.

Recreational maths with 18439451472

• 18439451472 backwards is 27415493481
• 18439451472 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18439451472's digits is 48
• More coming soon!