1981430640

Names of 1981430640

• Cardinal: 1981430640 can be written as One billion, nine hundred eighty-one million, four hundred thirty thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.98143064 × 10⁹

Factors of 1981430640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 307

Divisors of 1981430640

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 27 28 30 35 36 40 42 45 48 49 54 56 60 63 70 72 80 84 90 97 98 105 108 112 120 126 135 140 144 147 168 180 189 193 194 196 210 216 240 245 252 270 280 291 294 315 336 360 378 386 388 392 420 432 441 485 490 504 540 560 579 582 588 630 679 720 735 756 772 776 784 840 873 882 945 965 970 980 1008 1080 1158 1164 1176 1260 1323 1351 1358 1455 1470 1512 1544 1552 1680 1737 1746 1764 1890 1930 1940 1960 2037 2160 2205 2316 2328 2352 2520 2619 2646 2702 2716 2895 2910 2940 3024 3088 3395 3474 3492 3528 3780 3860 3880 3920 4053 4074 4365 4410 4632 4656 4753 5040 5211 5238 5292 5404 5432 5790 5820 5880 6111 6615 6755 6790 6948 6984 7056 7560 7720 7760 8106 8148 8685 8730 8820 9264 9457 9506 10185 10422 10476 10584 10808 10864 11580 11640 11760 12159 12222 13095 13230 13510 13580 13896 13968 14259 15120 15440 16212 16296 17370 17460 17640 18333 18721 18914 19012 20265 20370 20844 20952 21168 21616 23160 23280 23765 24318 24444 26055 26190 26460 27020 27160 27792 28371 28518 30555 32424 32592 34740 34920 35280 36477 36666 37442 37828 38024 40530 40740 41688 41904 42777 46320 47285 47530 48636 48888 52110 52380 52920 54040 54320 56163 56742 57036 60795 61110 64848 69480 69840 71295 72954 73332 74884 75656 76048 81060 81480 83376 85113 85554 91665 93605 94570 95060 97272 97776 104220 104760 105840 108080 112326 113484 114072 121590 122220 128331 131047 138960 141855 142590 145908 146664 149768 151312 162120 162960 168489 170226 171108 182385 183330 187210 189140 190120 194544 208440 209520 213885 224652 226968 228144 243180 244440 255339 256662 262094 280815 283710 285180 291816 293328 299536 324240 336978 340452 342216 364770 366660 374420 378280 380240 393141 416880 425565 427770 449304 453936 486360 488880 505467 510678 513324 524188 561630 567420 570360 583632 641655 655235 673956 680904 684432 729540 733320 748840 756560 786282 842445 851130 855540 898608 917329 972720 1010934 1021356 1026648 1048376 1123260 1134840 1140720 1179423 1276695 1283310 1310470 1347912 1361808 1459080 1466640 1497680 1572564 1684890 1702260 1711080 1834658 1965705 2021868 2042712 2053296 2096752 2246520 2269680 2358846 2527335 2553390 2566620 2620940 2695824 2751987 2918160 3145128 3369780 3404520 3422160 3538269 3669316 3931410 4043736 4085424 4493040 4586645 4717692 5054670 5106780 5133240 5241880 5503974 5897115 6290256 6739560 6809040 7076538 7338632 7862820 8087472 8255961 9173290 9435384 10109340 10213560 10266480 10483760 11007948 11794230 13479120 13759935 14153076 14677264 15725640 16511922 17691345 18346580 18870768 20218680 20427120 22015896 23588460 24767883 27519870 28306152 31451280 33023844 35382690 36693160 40437360 41279805 44031792 47176920 49535766 55039740 56612304 66047688 70765380 73386320 82559610 94353840 99071532 110079480 123839415 132095376 141530760 165119220 198143064 220158960 247678830 283061520 330238440 396286128 495357660 660476880 990715320 1981430640
• Sum of all divisors σ(n): 8062608960
• Sum of proper divisors (its aliquot sum) s(n): 6081178320
• 1981430640 is an abundant number, because the sum of its proper divisors (6081178320) is greater than itself. Its abundance is 4099747680

Bases of 1981430640

• Binary: 1110110000110100011101101110000₂
• Hexadecimal: 0x761A3B70
• Base-36: WROXO0

Squares and roots of 1981430640

• 1981430640 squared (1981430640²) is 3926067381130809600
• 1981430640 cubed (1981430640³) is 7779230203677143989446144000
• The square root of 1981430640 is 44513.2636413013
• The cube root of 1981430640 is 1256.0095980173

Scales and comparisons

• 1,981,430,640 seconds is equal to 63 years, 1 day, 5 hours, 24 minutes.
• To count from 1 to 1,981,430,640 would take you about one hundred twenty-six 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 1981430640 cubic inches would be around 104.7 feet tall.

Recreational maths with 1981430640

• 1981430640 backwards is 0460341891
• 1981430640 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1981430640's digits is 36
• More coming soon!