18913223840

Names of 18913223840

• Cardinal: 18913223840 can be written as Eighteen billion, nine hundred thirteen million, two hundred twenty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.891322384 × 10¹⁰

Factors of 18913223840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2069

Divisors of 18913223840

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 49 53 56 70 80 92 98 106 112 115 140 160 161 184 196 212 224 230 245 265 280 322 368 371 392 424 460 490 530 560 644 736 742 784 805 848 920 980 1060 1120 1127 1219 1288 1484 1568 1610 1696 1840 1855 1960 1979 2120 2254 2438 2576 2597 2968 3220 3680 3710 3920 3958 4240 4508 4876 5152 5194 5635 5936 6095 6440 7420 7840 7916 8480 8533 9016 9752 9895 10388 11270 11872 12190 12880 12985 13853 14840 15832 17066 18032 19504 19790 20776 22540 24380 25760 25970 27706 29680 31664 34132 36064 39008 39580 41552 42665 45080 45517 48760 51940 55412 59360 59731 63328 68264 69265 79160 83104 85330 90160 91034 96971 97520 103880 104887 110824 119462 136528 138530 158320 170660 180320 182068 193942 195040 207760 209774 221648 227585 238924 273056 277060 298655 316640 318619 341320 364136 387884 415520 419548 443296 455170 477848 484855 524435 554120 597310 637238 682640 728272 734209 775768 839096 910340 955696 969710 1048870 1108240 1194620 1274476 1365280 1456544 1468418 1551536 1593095 1678192 1820680 1911392 1939420 2097740 2216480 2230333 2389240 2412401 2548952 2936836 3103072 3186190 3356384 3641360 3671045 3878840 4195480 4460666 4778480 4824802 5097904 5139463 5873672 6372380 7282720 7342090 7757680 8390960 8921332 9556960 9649604 10195808 10278926 11151665 11747344 12062005 12744760 14684180 15515360 16781920 16886807 17842664 19299208 20557852 22303330 23494688 24124010 25489520 25697315 29368360 33773614 35685328 38598416 41115704 44606660 48248020 50979040 51394630 58736720 67547228 71370656 77196832 82231408 84434035 89213320 96496040 102789260 117473440 118207649 135094456 164462816 168868070 178426640 192992080 205578520 236415298 270188912 337736140 356853280 385984160 411157040 472830596 540377824 591038245 675472280 822314080 945661192 1182076490 1350944560 1891322384 2364152980 2701889120 3782644768 4728305960 9456611920 18913223840
• Sum of all divisors σ(n): 55288759680
• Sum of proper divisors (its aliquot sum) s(n): 36375535840
• 18913223840 is an abundant number, because the sum of its proper divisors (36375535840) is greater than itself. Its abundance is 17462312000

Bases of 18913223840

• Binary: 10001100111010100001110010010100000₂
• Hexadecimal: 0x46750E4A0
• Base-36: 8OSG0WW

Squares and roots of 18913223840

• 18913223840 squared (18913223840²) is 357710036021944345600
• 18913223840 cubed (18913223840³) is 6765449981097496560355119104000
• The square root of 18913223840 is 137525.3570800673
• The cube root of 18913223840 is 2664.3331038051

Scales and comparisons

• 18,913,223,840 seconds is equal to 601 years, 19 weeks, 6 days, 1 hour, 17 minutes, 20 seconds.
• To count from 1 to 18,913,223,840 would take you about one thousand, two hundred 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 18913223840 cubic inches would be around 222 feet tall.

Recreational maths with 18913223840

• 18913223840 backwards is 04832231981
• The number of decimal digits it has is: 11
• The sum of 18913223840's digits is 41
• More coming soon!