18391481745408

Names of 18391481745408

• Cardinal: 18391481745408 can be written as Eighteen trillion, three hundred ninety-one billion, four hundred eighty-one million, seven hundred forty-five thousand, four hundred eight.

Scientific notation

• Scientific notation: 1.8391481745408 × 10¹³

Factors of 18391481745408

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 207

Divisors of 18391481745408

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 53 64 72 96 106 128 144 149 159 192 212 256 288 298 318 384 424 447 477 512 576 596 636 768 848 894 954 1024 1152 1192 1272 1341 1536 1696 1788 1908 2048 2304 2384 2544 2682 2809 3072 3392 3576 3816 4096 4608 4768 5088 5364 5618 6144 6784 7152 7632 7897 8192 8427 9216 9536 10176 10728 11236 12288 13568 14304 15264 15794 16384 16854 18432 19072 20352 21456 22201 22472 23691 24576 25281 27136 28608 30528 31588 32768 33708 36864 38144 40704 42912 44402 44944 47382 49152 50562 54272 57216 61056 63176 66603 67416 71073 73728 76288 81408 85824 88804 89888 94764 98304 101124 108544 114432 122112 126352 133206 134832 142146 147456 152576 162816 171648 177608 179776 189528 199809 202248 217088 228864 244224 252704 266412 269664 284292 294912 305152 325632 343296 355216 359552 379056 399618 404496 418541 434176 457728 488448 505408 532824 539328 568584 610304 651264 686592 710432 719104 758112 799236 808992 837082 868352 915456 976896 1010816 1065648 1078656 1137168 1176653 1220608 1255623 1302528 1373184 1420864 1438208 1516224 1598472 1617984 1674164 1736704 1830912 1953792 2021632 2131296 2157312 2274336 2353306 2441216 2511246 2605056 2746368 2841728 2876416 3032448 3196944 3235968 3348328 3529959 3661824 3766869 3907584 4043264 4262592 4314624 4548672 4706612 4882432 5022492 5210112 5492736 5683456 5752832 6064896 6393888 6471936 6696656 7059918 7323648 7533738 7815168 8086528 8525184 8629248 9097344 9413224 10044984 10589877 10985472 11366912 11505664 12129792 12787776 12943872 13393312 14119836 14647296 15067476 15630336 16173056 17050368 17258496 18194688 18826448 20089968 21179754 21970944 22733824 23011328 24259584 25575552 25887744 26786624 28239672 30134952 32346112 34100736 34516992 36389376 37652896 40179936 42359508 43941888 45467648 46022656 48519168 51151104 51775488 53573248 56479344 60269904 62362609 64692224 68201472 69033984 72778752 75305792 80359872 84719016 90935296 92045312 97038336 102302208 103550976 107146496 112958688 120539808 124725218 129384448 136402944 138067968 145557504 150611584 160719744 169438032 181870592 187087827 194076672 204604416 207101952 214292992 225917376 241079616 249450436 258768896 272805888 276135936 291115008 301223168 321439488 338876064 363741184 374175654 388153344 409208832 414203904 428585984 451834752 482159232 498900872 545611776 561263481 582230016 602446336 642878976 677752128 727482368 748351308 776306688 818417664 828407808 857171968 903669504 964318464 997801744 1091223552 1122526962 1164460032 1204892672 1285757952 1355504256 1496702616 1636835328 1714343936 1807339008 1928636928 1995603488 2182447104 2245053924 2328920064 2409785344 2571515904 2711008512 2993405232 3273670656 3428687872 3614678016 3857273856 3991206976 4490107848 4819570688 5143031808 5422017024 5986810464 6547341312 6857375744 7229356032 7714547712 7982413952 8980215696 9639141376 10286063616 10844034048 11973620928 13714751488 14458712064 15429095424 15964827904 17960431392 19278282752 20572127232 21688068096 23947241856 28917424128 30858190848 31929655808 35920862784 38556565504 41144254464 43376136192 47894483712 57834848256 61716381696 63859311616 71841725568 86752272384 95788967424 115669696512 123432763392 127718623232 143683451136 173504544768 191577934848 255437246464 287366902272 347009089536 383155869696 510874492928 574733804544 766311739392 1021748985856 1149467609088 1532623478784 2043497971712 2298935218176 3065246957568 4597870436352 6130493915136 9195740872704 18391481745408
• Sum of all divisors σ(n): 54517378284915
• Sum of proper divisors (its aliquot sum) s(n): 36125896539507
• 18391481745408 is an abundant number, because the sum of its proper divisors (36125896539507) is greater than itself. Its abundance is 17734414794099

Bases of 18391481745408

• Binary: 100001011101000011001101111001000000000000000₂
• Hexadecimal: 0x10BA19BC8000
• Base-36: 6IOXHDKW0

Squares and roots of 18391481745408

• 18391481745408 squared (18391481745408²) is 338246600791675694129086464
• 18391481745408 cubed (18391481745408³) is 6220856183906410689658301059387266957312
• The square root of 18391481745408 is 4288529.0887911673
• The cube root of 18391481745408 is 26396.0478403353

Scales and comparisons

• 18,391,481,745,408 seconds is equal to 584,792 years, 12 weeks, 1 hour, 16 minutes, 48 seconds.
• To count from 1 to 18,391,481,745,408 would take you about one million, four hundred sixty-one thousand, nine hundred eighty 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 18391481745408 cubic inches would be around 2199.7 feet tall.

Recreational maths with 18391481745408

• 18391481745408 backwards is 80454718419381
• The number of decimal digits it has is: 14
• The sum of 18391481745408's digits is 63
• More coming soon!