18645139968

Names of 18645139968

• Cardinal: 18645139968 can be written as Eighteen billion, six hundred forty-five million, one hundred thirty-nine thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 1.8645139968 × 10¹⁰

Factors of 18645139968

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 387

Divisors of 18645139968

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 21 24 26 28 31 32 39 42 48 52 56 62 64 78 84 91 93 96 104 112 124 128 156 168 169 182 186 192 208 217 224 248 256 273 312 331 336 338 364 372 384 403 416 434 448 496 507 512 546 624 651 662 672 676 728 744 768 806 832 868 896 992 993 1014 1092 1183 1209 1248 1302 1324 1344 1352 1456 1488 1536 1612 1664 1736 1792 1984 1986 2028 2184 2317 2366 2418 2496 2604 2648 2688 2704 2821 2912 2976 3224 3328 3472 3549 3584 3968 3972 4056 4303 4368 4634 4732 4836 4992 5208 5239 5296 5376 5408 5642 5824 5952 6448 6656 6944 6951 7098 7936 7944 8112 8463 8606 8736 9268 9464 9672 9984 10261 10416 10478 10592 10752 10816 11284 11648 11904 12896 12909 13888 13902 14196 15717 15872 15888 16224 16926 17212 17472 18536 18928 19344 19968 20522 20832 20956 21184 21632 22568 23296 23808 25792 25818 27776 27804 28392 30121 30783 31434 31776 32448 33852 34424 34944 36673 37072 37856 38688 41044 41664 41912 42368 43264 45136 46592 47616 51584 51636 55552 55608 55939 56784 60242 61566 62868 63552 64896 67704 68848 69888 71827 73346 74144 75712 77376 82088 83328 83824 84736 86528 90272 90363 103168 103272 110019 111104 111216 111878 113568 120484 123132 125736 127104 129792 133393 135408 137696 139776 143654 146692 148288 151424 154752 164176 166656 167648 167817 169472 180544 180726 206336 206544 215481 220038 222432 223756 227136 240968 246264 251472 254208 259584 266786 270816 275392 287308 293384 296576 302848 309504 328352 333312 335296 335634 361088 361452 391573 400179 413088 430962 440076 444864 447512 454272 481936 492528 502944 508416 533572 541632 550784 574616 586768 593152 605696 619008 656704 670592 671268 722176 722904 783146 800358 826176 861924 880152 889728 895024 908544 933751 963872 985056 1005888 1067144 1083264 1101568 1149232 1173536 1174719 1186304 1313408 1341184 1342536 1444352 1445808 1566292 1600716 1652352 1723848 1734109 1760304 1779456 1790048 1817088 1867502 1927744 1970112 2011776 2134288 2166528 2203136 2298464 2347072 2349438 2626816 2682368 2685072 2801253 2891616 3132584 3201432 3304704 3447696 3468218 3520608 3558912 3580096 3735004 3855488 3940224 4023552 4268576 4333056 4596928 4694144 4698876 5202327 5253632 5370144 5602506 5783232 6265168 6402864 6609408 6895392 6936436 7041216 7160192 7470008 7710976 7880448 8047104 8537152 9193856 9388288 9397752 10404654 10740288 11205012 11566464 12138763 12530336 12805728 13790784 13872872 14082432 14320384 14940016 15421952 15760896 17074304 18387712 18776576 18795504 20809308 21480576 22410024 23132928 24277526 25060672 25611456 27581568 27745744 28164864 28640768 29880032 34148608 36416289 36775424 37591008 41618616 42961152 44820048 46265856 48555052 50121344 51222912 55163136 55491488 56329728 59760064 68297216 72832578 75182016 83237232 85922304 89640096 97110104 100242688 102445824 110326272 110982976 119520128 145665156 150364032 166474464 179280192 194220208 200485376 204891648 221965952 239040256 291330312 300728064 332948928 358560384 388440416 443931904 478080512 582660624 601456128 665897856 717120768 776880832 887863808 1165321248 1331795712 1434241536 1553761664 2330642496 2663591424 3107523328 4661284992 6215046656 9322569984 18645139968
• Sum of all divisors σ(n): 63645069312
• Sum of proper divisors (its aliquot sum) s(n): 44999929344
• 18645139968 is an abundant number, because the sum of its proper divisors (44999929344) is greater than itself. Its abundance is 26354789376

Bases of 18645139968

• Binary: 10001010111010101100100001000000000₂
• Hexadecimal: 0x457564200
• Base-36: 8KCU22O

Squares and roots of 18645139968

• 18645139968 squared (18645139968²) is 347641244426311041024
• 18645139968 cubed (18645139968³) is 6481819660978269221796270047232
• The square root of 18645139968 is 136547.2078367039
• The cube root of 18645139968 is 2651.6846991545

Scales and comparisons

• 18,645,139,968 seconds is equal to 592 years, 44 weeks, 4 days, 5 hours, 32 minutes, 48 seconds.
• To count from 1 to 18,645,139,968 would take you about one thousand, one hundred eighty-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 18645139968 cubic inches would be around 221 feet tall.

Recreational maths with 18645139968

• 18645139968 backwards is 86993154681
• The number of decimal digits it has is: 11
• The sum of 18645139968's digits is 60
• More coming soon!