1981123131520

Names of 1981123131520

• Cardinal: 1981123131520 can be written as One trillion, nine hundred eighty-one billion, one hundred twenty-three million, one hundred thirty-one thousand, five hundred twenty.

Scientific notation

• Scientific notation: 1.98112313152 × 10¹²

Factors of 1981123131520

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1207

Divisors of 1981123131520

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 128 130 160 169 208 260 320 338 416 520 640 676 832 845 1040 1187 1352 1664 1690 2080 2197 2374 2704 3380 4160 4394 4748 5408 5935 6760 8320 8788 9496 10816 10985 11870 13520 15431 17576 18992 21632 21970 23740 27040 30862 35152 37984 43940 47480 54080 61724 70304 75968 77155 87880 94960 108160 123448 140608 151936 154310 175760 189920 200603 246896 281216 308620 351520 379840 401206 493792 617240 703040 759680 802412 987584 1003015 1234480 1406080 1408969 1604824 1975168 2006030 2468960 2607839 2817938 3209648 4012060 4937920 5215678 5635876 6419296 7044845 8024120 9875840 10431356 11271752 12838592 13039195 14089690 16048240 18316597 20862712 22543504 25677184 26078390 28179380 32096480 36633194 41725424 45087008 52156780 56358760 64192960 73266388 83450848 90174016 91582985 104313560 112717520 128385920 146532776 166901696 180348032 183165970 208627120 225435040 238115761 293065552 333803392 366331940 417254240 450870080 476231522 586131104 732663880 834508480 901740160 952463044 1172262208 1190578805 1465327760 1669016960 1904926088 2344524416 2381157610 2930655520 3095504893 3809852176 4762315220 5861311040 6191009786 7619704352 9524630440 11722622080 12382019572 15239408704 15477524465 19049260880 24764039144 30478817408 30955048930 38098521760 49528078288 61910097860 76197043520 99056156576 123820195720 152394087040 198112313152 247640391440 396224626304 495280782880 990561565760 1981123131520
• Sum of all divisors σ(n): 5134945699800
• Sum of proper divisors (its aliquot sum) s(n): 3153822568280
• 1981123131520 is an abundant number, because the sum of its proper divisors (3153822568280) is greater than itself. Its abundance is 1172699436760

Bases of 1981123131520

• Binary: 11100110101000100001000111111100010000000₂
• Hexadecimal: 0x1CD4423F880
• Base-36: PA45K7LS

Squares and roots of 1981123131520

• 1981123131520 squared (1981123131520²) is 3924848862243611217510400
• 1981123131520 cubed (1981123131520³) is 7775608868710772148347603506167808000
• The square root of 1981123131520 is 1407523.7587763839
• The cube root of 1981123131520 is 12559.4461911139

Scales and comparisons

• 1,981,123,131,520 seconds is equal to 62,993 years, 30 weeks, 3 days, 20 hours, 58 minutes, 40 seconds.
• To count from 1 to 1,981,123,131,520 would take you about one hundred fifty-seven thousand, four hundred eighty-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 1981123131520 cubic inches would be around 1046.6 feet tall.

Recreational maths with 1981123131520

• 1981123131520 backwards is 0251313211891
• The number of decimal digits it has is: 13
• The sum of 1981123131520's digits is 37
• More coming soon!