1981642320

Names of 1981642320

• Cardinal: 1981642320 can be written as One billion, nine hundred eighty-one million, six hundred forty-two thousand, three hundred twenty.

Scientific notation

• Scientific notation: 1.98164232 × 10⁹

Factors of 1981642320

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 96

Divisors of 1981642320

• Number of divisors d(n): 450
• 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 79 80 81 84 90 98 105 108 112 120 126 135 140 144 147 158 162 168 180 189 196 210 216 237 240 245 252 270 280 294 315 316 324 336 360 378 392 395 405 420 432 441 474 490 504 540 553 560 567 588 630 632 648 711 720 735 756 784 790 810 840 882 945 948 980 1008 1080 1106 1134 1176 1185 1260 1264 1296 1323 1422 1470 1512 1580 1620 1659 1680 1764 1890 1896 1960 2133 2160 2205 2212 2268 2352 2370 2520 2646 2765 2835 2844 2940 3024 3160 3240 3318 3528 3555 3780 3792 3871 3920 3969 4266 4410 4424 4536 4740 4977 5040 5292 5530 5670 5688 5880 6241 6320 6399 6480 6615 6636 7056 7110 7560 7742 7938 8295 8532 8820 8848 9072 9480 9954 10584 10665 11060 11340 11376 11613 11760 12482 12798 13230 13272 14220 14931 15120 15484 15876 16590 17064 17640 18723 18960 19355 19845 19908 21168 21330 22120 22680 23226 24885 24964 25596 26460 26544 28440 29862 30968 31205 31752 31995 33180 34128 34839 35280 37446 38710 39690 39816 42660 43687 44240 44793 45360 46452 49770 49928 51192 52920 56169 56880 58065 59724 61936 62410 63504 63990 66360 69678 74655 74892 77420 79380 79632 85320 87374 89586 92904 93615 99540 99856 102384 104517 105840 112338 116130 119448 124820 127980 131061 132720 139356 149310 149784 154840 158760 168507 170640 174195 174748 179172 185808 187230 199080 209034 218435 223965 224676 232260 238896 249640 255960 262122 278712 280845 298620 299568 305809 309680 313551 317520 337014 348390 349496 358344 374460 393183 398160 418068 436870 447930 449352 464520 499280 505521 511920 522585 524244 557424 561690 597240 611618 627102 655305 674028 696780 698992 716688 748920 786366 836136 842535 873740 895860 898704 917427 929040 1011042 1045170 1048488 1123380 1179549 1194480 1223236 1254204 1310610 1348056 1393560 1497840 1529045 1567755 1572732 1672272 1685070 1747480 1791720 1834854 1965915 2022084 2090340 2096976 2246760 2359098 2446472 2508408 2527605 2621220 2696112 2752281 2787120 3058090 3135510 3145464 3370140 3494960 3538647 3583440 3669708 3931830 4044168 4180680 4493520 4587135 4718196 4892944 5016816 5055210 5242440 5504562 5897745 6116180 6271020 6290928 6740280 7077294 7339416 7863660 8088336 8256843 8361360 9174270 9436392 10110420 10484880 11009124 11795490 12232360 12542040 13480560 13761405 14154588 14678832 15727320 16513686 17693235 18348540 18872784 20220840 22018248 23590980 24464720 24770529 25084080 27522810 28309176 31454640 33027372 35386470 36697080 40441680 41284215 44036496 47181960 49541058 55045620 56618352 66054744 70772940 73394160 82568430 94363920 99082116 110091240 123852645 132109488 141545880 165136860 198164232 220182480 247705290 283091760 330273720 396328464 495410580 660547440 990821160 1981642320
• Sum of all divisors σ(n): 8108844282
• Sum of proper divisors (its aliquot sum) s(n): 6127201962
• 1981642320 is an abundant number, because the sum of its proper divisors (6127201962) is greater than itself. Its abundance is 4145559642

Bases of 1981642320

• Binary: 1110110000111010111011001010000₂
• Hexadecimal: 0x761D7650
• Base-36: WRTH00

Squares and roots of 1981642320

• 1981642320 squared (1981642320²) is 3926906284414982400
• 1981642320 cubed (1981642320³) is 7781723679870685565895168000
• The square root of 1981642320 is 44515.6412960657
• The cube root of 1981642320 is 1256.0543237217

Scales and comparisons

• 1,981,642,320 seconds is equal to 63 years, 3 days, 16 hours, 12 minutes.
• To count from 1 to 1,981,642,320 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 1981642320 cubic inches would be around 104.7 feet tall.

Recreational maths with 1981642320

• 1981642320 backwards is 0232461891
• 1981642320 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1981642320's digits is 36
• More coming soon!