1991939040

Names of 1991939040

• Cardinal: 1991939040 can be written as One billion, nine hundred ninety-one million, nine hundred thirty-nine thousand and forty.

Scientific notation

• Scientific notation: 1.99193904 × 10⁹

Factors of 1991939040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 593

Divisors of 1991939040

• Number of divisors d(n): 576
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 27 28 30 32 35 36 39 40 42 45 48 52 54 56 60 63 65 70 72 78 80 81 84 90 91 96 104 105 108 112 117 120 126 130 135 140 144 156 160 162 168 180 182 189 195 208 210 216 224 234 240 243 252 260 270 273 280 288 312 315 324 336 351 360 364 378 390 405 416 420 432 455 468 480 486 504 520 540 546 560 563 567 585 624 630 648 672 702 720 728 756 780 810 819 840 864 910 936 945 972 1008 1040 1053 1080 1092 1120 1126 1134 1170 1215 1248 1260 1296 1365 1404 1440 1456 1512 1560 1620 1638 1680 1689 1701 1755 1820 1872 1890 1944 2016 2080 2106 2160 2184 2252 2268 2340 2430 2457 2520 2592 2730 2808 2815 2835 2912 3024 3120 3159 3240 3276 3360 3378 3402 3510 3640 3744 3780 3888 3941 4095 4212 4320 4368 4504 4536 4680 4860 4914 5040 5067 5265 5460 5616 5630 5670 6048 6240 6318 6480 6552 6756 6804 7020 7280 7319 7371 7560 7776 7882 8190 8424 8445 8505 8736 9008 9072 9360 9720 9828 10080 10134 10530 10920 11232 11260 11340 11823 12285 12636 12960 13104 13512 13608 14040 14560 14638 14742 15120 15201 15764 15795 16380 16848 16890 17010 18016 18144 18720 19440 19656 19705 20268 21060 21840 21957 22113 22520 22680 23646 24570 25272 25335 26208 27024 27216 28080 29276 29484 30240 30402 31528 31590 32760 33696 33780 34020 35469 36595 36855 38880 39312 39410 40536 42120 43680 43914 44226 45040 45360 45603 47292 49140 50544 50670 51233 54048 54432 56160 58552 58968 59115 60804 63056 63180 65520 65871 67560 68040 70938 73190 73710 76005 78624 78820 81072 84240 87828 88452 90080 90720 91206 94584 98280 101088 101340 102466 106407 109785 110565 117104 117936 118230 121608 126112 126360 131040 131742 135120 136080 136809 141876 146380 147420 152010 153699 157640 162144 168480 175656 176904 177345 182412 189168 196560 197613 202680 204932 212814 219570 221130 228015 234208 235872 236460 243216 252720 256165 263484 270240 272160 273618 283752 292760 294840 304020 307398 315280 319221 329355 351312 353808 354690 364824 378336 393120 395226 405360 409864 425628 439140 442260 456030 461097 472920 486432 505440 512330 526968 532035 547236 567504 585520 589680 592839 608040 614796 630560 638442 658710 684045 702624 707616 709380 729648 768495 790452 810720 819728 851256 878280 884520 912060 922194 945840 957663 988065 1024660 1053936 1064070 1094472 1135008 1171040 1179360 1185678 1216080 1229592 1276884 1317420 1368090 1383291 1418760 1459296 1536990 1580904 1596105 1639456 1702512 1756560 1769040 1778517 1824120 1844388 1891680 1915326 1976130 2049320 2107872 2128140 2188944 2305485 2371356 2432160 2459184 2553768 2634840 2736180 2766582 2837520 2964195 3073980 3161808 3192210 3405024 3513120 3538080 3557034 3648240 3688776 3830652 3952260 4098640 4149873 4256280 4377888 4610970 4742712 4788315 4918368 5107536 5269680 5472360 5533164 5675040 5928390 6147960 6323616 6384420 6916455 7114068 7296480 7377552 7661304 7904520 8197280 8299746 8512560 8892585 9221940 9485424 9576630 10215072 10539360 10944720 11066328 11856780 12295920 12449619 12768840 13832910 14228136 14755104 15322608 15809040 16599492 17025120 17785170 18443880 18970848 19153260 20749365 21889440 22132656 23713560 24591840 24899238 25537680 27665820 28456272 30645216 31618080 33198984 35570340 36887760 38306520 41498730 44265312 47427120 49798476 51075360 55331640 56912544 62248095 66397968 71140680 73775520 76613040 82997460 94854240 99596952 110663280 124496190 132795936 142281360 153226080 165994920 199193904 221326560 248992380 284562720 331989840 398387808 497984760 663979680 995969520 1991939040
• Sum of all divisors σ(n): 8691411456
• Sum of proper divisors (its aliquot sum) s(n): 6699472416
• 1991939040 is an abundant number, because the sum of its proper divisors (6699472416) is greater than itself. Its abundance is 4707533376

Bases of 1991939040

• Binary: 1110110101110101001001111100000₂
• Hexadecimal: 0x76BA93E0
• Base-36: WXY600

Squares and roots of 1991939040

• 1991939040 squared (1991939040²) is 3967821139076121600
• 1991939040 cubed (1991939040³) is 7903657830662996146827264000
• The square root of 1991939040 is 44631.1442828883
• The cube root of 1991939040 is 1258.2260751329

Scales and comparisons

• 1,991,939,040 seconds is equal to 63 years, 17 weeks, 3 days, 20 hours, 24 minutes.
• To count from 1 to 1,991,939,040 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 1991939040 cubic inches would be around 104.9 feet tall.

Recreational maths with 1991939040

• 1991939040 backwards is 0409391991
• 1991939040 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1991939040's digits is 45
• More coming soon!