1991021290440

Names of 1991021290440

• Cardinal: 1991021290440 can be written as One trillion, nine hundred ninety-one billion, twenty-one million, two hundred ninety thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.99102129044 × 10¹²

Factors of 1991021290440

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 6331

Divisors of 1991021290440

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 13 14 15 20 21 24 26 28 30 31 35 39 40 42 49 52 56 60 62 65 70 78 84 91 93 98 104 105 120 124 130 137 140 147 155 156 168 182 186 195 196 210 217 245 248 260 273 274 280 294 310 312 364 372 390 392 403 411 420 434 455 465 490 520 546 548 588 620 637 651 685 728 735 744 780 806 822 840 868 910 930 959 980 1085 1092 1096 1176 1209 1240 1274 1302 1365 1370 1470 1519 1560 1612 1644 1736 1781 1820 1860 1911 1918 1960 2015 2055 2170 2184 2418 2548 2604 2730 2740 2821 2877 2940 3038 3185 3224 3255 3288 3562 3640 3720 3822 3836 4030 4110 4247 4340 4557 4795 4836 5096 5208 5343 5460 5480 5642 5754 5880 6045 6076 6133 6370 6510 6713 7124 7595 7644 7672 8060 8220 8463 8494 8680 8905 9114 9555 9590 9672 10686 10920 11284 11508 12090 12152 12266 12467 12740 12741 13020 13426 14105 14248 14385 15190 15288 16120 16440 16926 16988 17810 18228 18399 19110 19180 19747 20139 21235 21372 22568 22785 23016 24180 24532 24934 25480 25482 26040 26715 26852 28210 28770 29729 30380 30665 33565 33852 33976 35620 36456 36798 37401 38220 38360 39494 40278 42315 42470 42744 42931 45570 48360 49064 49868 50964 53430 53704 55211 56420 57540 59241 59458 60760 61330 62335 63705 67130 67704 71240 73596 74802 76440 78988 79729 80556 84630 84940 85862 87269 89187 91140 91995 98735 99736 100695 101928 106860 110422 112840 115080 118482 118916 122660 124670 127410 128793 134260 147192 148645 149604 157976 159458 161112 165633 169260 169880 171724 174538 178374 182280 183990 187005 190123 197470 201390 208103 213720 214655 220844 236964 237832 239187 245320 249340 254820 257586 261807 268520 276055 296205 297290 299208 300517 318916 331266 338520 343448 349076 356748 367980 374010 380246 386477 394940 398645 402780 416206 429310 436345 441688 445935 473928 478374 498680 509640 515172 523614 552110 558103 570369 592410 594580 601034 624309 637832 643965 662532 698152 713496 735960 748020 760492 772954 789880 797290 805560 828165 832412 840221 858620 872690 891870 901551 950615 956748 1030344 1040515 1047228 1104220 1116206 1140738 1159431 1184820 1189160 1195935 1202068 1248618 1287930 1309035 1325064 1330861 1496040 1502585 1520984 1545908 1594580 1656330 1664824 1674309 1680442 1717240 1745380 1783740 1803102 1901230 1913496 1932385 2081030 2094456 2208440 2232412 2281476 2318862 2369640 2391870 2404136 2471599 2497236 2520663 2575860 2618070 2661722 2705339 2790515 2851845 3005170 3091816 3121545 3189160 3312660 3348618 3360884 3490760 3567480 3606204 3802460 3864770 3906721 3992583 4162060 4201105 4464824 4507755 4562952 4637724 4783740 4943198 4994472 5041326 5151720 5236140 5323444 5410678 5581030 5703690 5797155 5881547 6010340 6243090 6625320 6654305 6697236 6721768 7212408 7414797 7604920 7729540 7813442 7985166 8116017 8324120 8371545 8402210 9015510 9275448 9316027 9567480 9886396 10082652 10472280 10646888 10821356 10922873 11162060 11407380 11594310 11720163 11763094 12020680 12357995 12486180 12603315 13308610 13394472 13526695 14829594 15459080 15626884 15970332 16232034 16743090 16804420 17301193 17644641 18031020 18632054 19533605 19772792 19962915 20165304 21642712 21845746 22324120 22814760 23188620 23440326 23526188 24715990 24972360 25206630 26046851 26617220 27053390 27948081 29407735 29659188 31253768 31940664 32464068 32768619 33486180 33608840 34602386 35289282 36062040 37073985 37264108 39067210 39925830 40580085 41170829 43691492 46377240 46580135 46880652 47052376 49431980 50413260 51903579 52093702 53234440 54106780 54614365 55896162 58600815 58815470 59318376 64928136 65537238 66972360 69204772 70578564 74147970 74528216 76460111 78134420 78140553 79851660 81160170 82341658 86505965 87382984 88223205 93160270 93761304 98863960 100826520 103807158 104187404 108213560 109228730 111792324 117201630 117630940 121108351 123512487 130234255 131074476 138409544 139740405 141157128 148295940 152920222 156268840 156281106 159703320 162320340 163843095 164683316 173011930 176446410 182327957 186320540 205854145 207614316 208374808 218457460 223584648 229380333 234403260 235261880 242216702 247024974 259517895 260468510 262148952 279480810 296591880 305840444 312562212 324640680 327686190 329366632 338609063 346023860 352892820 363325053 364655914 372641080 382300555 390702765 411708290 415228632 436914920 458760666 468806520 484433404 494049948 519035790 520937020 535220777 546983871 558961620 605541755 611680888 617562435 625124424 655372380 677218126 692047720 705785640 726650106 729311828 764601110 781405530 823416580 911639785 917521332 968866808 988099896 1015827189 1038071580 1041874040 1070441554 1093967742 1117923240 1146901665 1211083510 1235124870 1276295699 1310744760 1354436252 1453300212 1458623656 1529202220 1562811060 1605662331 1646833160 1693045315 1816625265 1823279570 1835042664 2031654378 2076143160 2140883108 2187935484 2293803330 2370263441 2422167020 2470249740 2552591398 2676103885 2708872504 2734919355 2906600424 3058404440 3125622120 3211324662 3386090630 3633250530 3646559140 3828887097 4063308756 4281766216 4375870968 4587606660 4740526882 4844334040 4940499480 5079135945 5105182796 5352207770 5469838710 6381478495 6422649324 6772181260 7110790323 7266501060 7293118280 7657774194 8028311655 8126617512 9175213320 9481053764 10158271890 10210365592 10704415540 10939677420 11851317205 12762956990 12845298648 13544362520 14221580646 14533002120 15315548388 16056623310 16591844087 18962107528 19144435485 20316543780 21408831080 21879354840 23702634410 25525913980 28443161292 30631096776 32113246620 33183688174 35553951615 38288870970 40633087560 47405268820 49775532261 51051827960 56886322584 64226493240 66367376348 71107903230 76577741940 82959220435 94810537640 99551064522 132734752696 142215806460 153155483880 165918440870 199102129044 248877661305 284431612920 331836881740 398204258088 497755322610 663673763480 995510645220 1991021290440
• Sum of all divisors σ(n): 7781767096320
• Sum of proper divisors (its aliquot sum) s(n): 5790745805880
• 1991021290440 is an abundant number, because the sum of its proper divisors (5790745805880) is greater than itself. Its abundance is 3799724515440

Bases of 1991021290440

• Binary: 11100111110010010000111011110001111001000₂
• Hexadecimal: 0x1CF921DE3C8
• Base-36: PENUO3WO

Squares and roots of 1991021290440

• 1991021290440 squared (1991021290440²) is 3964165778985362835393600
• 1991021290440 cubed (1991021290440³) is 7892738464793524946396982777317184000
• The square root of 1991021290440 is 1411035.5383334607
• The cube root of 1991021290440 is 12580.3281054819

Scales and comparisons

• 1,991,021,290,440 seconds is equal to 63,308 years, 16 weeks, 3 days, 21 hours, 34 minutes.
• To count from 1 to 1,991,021,290,440 would take you about one hundred fifty-eight thousand, two hundred seventy 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 1991021290440 cubic inches would be around 1048.4 feet tall.

Recreational maths with 1991021290440

• 1991021290440 backwards is 0440921201991
• 1991021290440 is a Harshad number.
• The number of decimal digits it has is: 13
• The sum of 1991021290440's digits is 42
• More coming soon!