18297438640

Names of 18297438640

• Cardinal: 18297438640 can be written as Eighteen billion, two hundred ninety-seven million, four hundred thirty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.829743864 × 10¹⁰

Factors of 18297438640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 474

Divisors of 18297438640

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 4 5 8 10 13 16 17 20 26 29 34 40 52 58 65 68 80 85 104 116 127 130 136 145 170 208 221 232 254 260 272 281 290 340 377 442 464 493 508 520 562 580 635 680 754 884 986 1016 1040 1105 1124 1160 1270 1360 1405 1508 1651 1768 1885 1972 2032 2159 2210 2248 2320 2465 2540 2810 3016 3302 3536 3653 3683 3770 3944 4318 4420 4496 4777 4930 5080 5620 6032 6409 6604 7306 7366 7540 7888 8149 8255 8636 8840 9554 9860 10160 10795 11240 12818 13208 14612 14732 15080 16298 16510 17272 17680 18265 18415 19108 19720 21590 22480 23885 25636 26416 28067 29224 29464 30160 32045 32596 33020 34544 35687 36530 36830 38216 39440 40745 43180 47770 47879 51272 56134 58448 58928 62101 62611 64090 65192 66040 71374 73060 73660 76432 81490 86360 95540 95758 102544 105937 112268 124202 125222 128180 130384 132080 138533 140335 142748 146120 147320 162980 172720 178435 191080 191516 211874 224536 239395 248404 250444 256360 277066 280670 285496 292240 294640 310505 313055 325960 356870 382160 383032 423748 449072 463931 478790 496808 500888 512720 529685 554132 561340 570992 606679 621010 626110 651920 692665 713740 766064 813943 847496 927862 957580 993616 1001776 1034923 1059370 1108264 1122680 1213358 1242020 1252220 1385330 1427480 1627886 1694992 1800929 1855724 1915160 2069846 2118740 2216528 2245360 2319655 2426716 2484040 2504440 2770660 2854960 3033395 3255772 3601858 3711448 3830320 4069715 4139692 4237480 4639310 4853432 4968080 5008880 5174615 5541320 6066790 6511544 7203716 7422896 7886827 8139430 8279384 8474960 9004645 9278620 9706864 10349230 11082640 12133580 13023088 13453999 14407432 15773654 16278860 16558768 17593691 18009290 18557240 20698460 24267160 26907998 28814864 31547308 32557720 35187382 36018580 37114480 39434135 41396920 48534320 53815996 63094616 65115440 67269995 70374764 72037160 78868270 82793840 87968455 107631992 126189232 134539990 140749528 144074320 157736540 175936910 215263984 228717983 269079980 281499056 315473080 351873820 457435966 538159960 630946160 703747640 914871932 1076319920 1143589915 1407495280 1829743864 2287179830 3659487728 4574359660 9148719320 18297438640
• Sum of all divisors σ(n): 50756751360
• Sum of proper divisors (its aliquot sum) s(n): 32459312720
• 18297438640 is an abundant number, because the sum of its proper divisors (32459312720) is greater than itself. Its abundance is 14161874080

Bases of 18297438640

• Binary: 10001000010100111001100000110110000₂
• Hexadecimal: 0x4429CC1B0
• Base-36: 8ELTM0G

Squares and roots of 18297438640

• 18297438640 squared (18297438640²) is 334796260784565049600
• 18297438640 cubed (18297438640³) is 6125914038607017254144556544000
• The square root of 18297438640 is 135268.0251944265
• The cube root of 18297438640 is 2635.0979702817

Scales and comparisons

• 18,297,438,640 seconds is equal to 581 years, 41 weeks, 4 days, 21 hours, 50 minutes, 40 seconds.
• To count from 1 to 18,297,438,640 would take you about one thousand, one hundred sixty-three 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 18297438640 cubic inches would be around 219.6 feet tall.

Recreational maths with 18297438640

• 18297438640 backwards is 04683479281
• 18297438640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18297438640's digits is 52
• More coming soon!