18491039856

Names of 18491039856

• Cardinal: 18491039856 can be written as Eighteen billion, four hundred ninety-one million, thirty-nine thousand, eight hundred fifty-six.

Scientific notation

• Scientific notation: 1.8491039856 × 10¹⁰

Factors of 18491039856

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 777

Divisors of 18491039856

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 19 24 27 29 36 38 48 54 57 58 72 76 87 108 114 116 131 144 152 171 174 216 228 232 261 262 304 342 348 393 432 456 464 513 522 524 551 593 684 696 783 786 912 1026 1044 1048 1102 1179 1186 1368 1392 1566 1572 1653 1779 2052 2088 2096 2204 2358 2372 2489 2736 3132 3144 3306 3537 3558 3799 4104 4176 4408 4716 4744 4959 4978 5337 6264 6288 6612 7074 7116 7467 7598 8208 8816 9432 9488 9918 9956 10674 11267 11397 12528 13224 14148 14232 14877 14934 15196 16011 17197 18864 19836 19912 21348 22401 22534 22794 26448 28296 28464 29754 29868 30392 32022 33801 34191 34394 39672 39824 42696 44802 45068 45588 51591 56592 59508 59736 60784 64044 67203 67602 68382 68788 72181 77683 79344 85392 89604 90136 91176 101403 102573 103182 119016 119472 128088 134406 135204 136764 137576 144362 154773 155366 179208 180272 182352 202806 205146 206364 216543 233049 238032 256176 268812 270408 273528 275152 288724 304209 309546 310732 326743 358416 405612 410292 412728 433086 464319 466098 537624 540816 547056 577448 608418 619092 621464 649629 653486 699147 811224 820584 825456 866172 928638 932196 980229 1075248 1154896 1216836 1238184 1242928 1299258 1306972 1398294 1475977 1622448 1641168 1732344 1857276 1864392 1948887 1960458 2097441 2252807 2433672 2476368 2598516 2613944 2796588 2940687 2951954 3464688 3714552 3728784 3897774 3920916 4194882 4427931 4505614 4867344 5197032 5227888 5593176 5881374 5903908 6758421 7429104 7795548 7841832 8389764 8822061 8855862 9011228 10394064 11186352 11762748 11807816 13283793 13516842 15591096 15683664 16779528 17644122 17711724 18022456 20275263 23525496 23615632 26567586 27033684 31182192 33559056 35288244 35423448 36044912 39851379 40550526 42803333 47050992 53135172 54067368 60825789 70576488 70846896 79702758 81101052 85606666 106270344 108134736 121651578 128409999 141152976 159405516 162202104 171213332 212540688 243303156 256819998 318811032 324404208 342426664 385229997 486606312 513639996 637622064 684853328 770459994 973212624 1027279992 1155689991 1540919988 2054559984 2311379982 3081839976 4622759964 6163679952 9245519928 18491039856
• Sum of all divisors σ(n): 58335552000
• Sum of proper divisors (its aliquot sum) s(n): 39844512144
• 18491039856 is an abundant number, because the sum of its proper divisors (39844512144) is greater than itself. Its abundance is 21353472288

Bases of 18491039856

• Binary: 10001001110001001101110000001110000₂
• Hexadecimal: 0x44E26E070
• Base-36: 8HT35O0

Squares and roots of 18491039856

• 18491039856 squared (18491039856²) is 341918554956180500736
• 18491039856 cubed (18491039856³) is 6322429627200659972639413334016
• The square root of 18491039856 is 135981.7629537139
• The cube root of 18491039856 is 2644.3591824299

Scales and comparisons

• 18,491,039,856 seconds is equal to 587 years, 49 weeks, 5 days, 15 hours, 57 minutes, 36 seconds.
• To count from 1 to 18,491,039,856 would take you about one thousand, one hundred seventy-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 18491039856 cubic inches would be around 220.4 feet tall.

Recreational maths with 18491039856

• 18491039856 backwards is 65893019481
• 18491039856 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18491039856's digits is 54
• More coming soon!