161990018880

Names of 161990018880

• Cardinal: 161990018880 can be written as One hundred sixty-one billion, nine hundred ninety million, eighteen thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 1.6199001888 × 10¹¹

Factors of 161990018880

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 329

Divisors of 161990018880

• Number of divisors d(n): 896
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 29 30 31 32 34 40 48 51 58 60 61 62 64 68 80 85 87 93 96 102 116 120 122 124 136 145 155 160 170 174 181 183 186 192 204 232 240 244 248 255 272 290 305 310 320 340 348 362 366 372 408 435 464 465 480 488 493 496 510 527 543 544 580 610 620 680 696 724 732 744 816 870 899 905 915 928 930 960 976 986 992 1020 1037 1054 1086 1088 1160 1220 1240 1360 1392 1448 1464 1479 1488 1581 1632 1740 1769 1798 1810 1830 1856 1860 1891 1952 1972 1984 2040 2074 2108 2172 2320 2440 2465 2480 2635 2697 2715 2720 2784 2896 2928 2958 2976 3077 3111 3162 3264 3480 3538 3596 3620 3660 3720 3782 3904 3944 4080 4148 4216 4344 4495 4640 4880 4930 4960 5185 5249 5270 5307 5394 5430 5440 5568 5611 5673 5792 5856 5916 5952 6154 6222 6324 6960 7076 7192 7240 7320 7395 7440 7564 7888 7905 8160 8296 8432 8688 8845 8990 9231 9280 9455 9760 9860 9920 10370 10498 10540 10614 10788 10860 11041 11222 11346 11584 11712 11832 12308 12444 12648 13485 13920 14152 14384 14480 14640 14790 14880 15128 15283 15385 15555 15747 15776 15810 16320 16592 16833 16864 17376 17690 17980 18462 18910 19520 19720 20740 20996 21080 21228 21576 21720 22082 22444 22692 23664 24616 24888 25296 26245 26535 26970 27840 28055 28304 28365 28768 28960 29280 29580 29760 30073 30256 30566 30770 31110 31494 31552 31620 32147 33123 33184 33666 33728 34752 35380 35960 36924 37820 39440 41480 41992 42160 42456 43152 43440 44164 44888 45384 45849 46155 47328 49232 49776 50592 52490 53070 53940 54839 55205 56110 56608 56730 57536 57920 58560 59160 60146 60512 61132 61540 62220 62988 63240 64294 66246 66368 67332 70760 71920 73848 75640 76415 78735 78880 82960 83984 84165 84320 84912 86304 86880 88328 89233 89776 90219 90768 91698 92310 94656 95387 96441 98464 99552 101184 104980 106140 107880 109678 110410 112220 113216 113460 118320 120292 121024 122264 123080 124440 125976 126480 128588 132492 134664 141520 143840 147696 150365 151280 152830 157470 157760 160735 162719 164517 165615 165920 167968 168330 168640 169824 172608 173760 176656 178466 179552 180438 181536 183396 184620 187697 190774 192882 196928 199104 209960 212280 215760 219356 220820 224440 226920 229245 236640 240584 244528 246160 248880 251952 252960 257176 264984 267699 269328 274195 283040 286161 287680 295392 300730 302560 305660 314940 320189 321470 325438 329034 331230 331840 335936 336660 339648 342271 353312 356932 359104 360876 363072 366792 369240 375394 381548 385764 419920 424560 431520 438712 441640 446165 448880 451095 453840 458490 473280 476935 481168 482205 488157 489056 492320 497760 503904 505920 514352 529968 535398 538656 548390 563091 566080 572322 590784 601460 605120 611320 629880 640378 642940 650876 658068 662460 673320 684542 706624 713864 721752 733584 738480 750788 763096 771528 813595 822585 839840 849120 863040 877424 883280 892330 897760 902190 907680 916980 932263 938485 953870 960567 962336 964410 976314 978112 984640 995520 1007808 1026813 1028704 1059936 1070796 1077312 1096780 1126182 1144644 1202920 1222640 1259760 1280756 1285880 1301752 1316136 1324920 1338495 1346640 1369084 1427728 1430805 1443504 1467168 1476960 1501576 1526192 1543056 1600945 1627190 1645170 1679680 1698240 1711355 1754848 1766560 1784660 1795520 1804380 1815360 1833960 1864526 1876970 1907740 1921134 1924672 1928820 1952628 2053626 2057408 2119872 2141592 2193560 2252364 2289288 2405840 2440785 2445280 2519520 2561512 2571760 2603504 2632272 2649840 2676990 2693280 2738168 2766223 2796789 2815455 2855456 2861610 2887008 2934336 2953920 3003152 3052384 3086112 3201890 3254380 3290340 3422710 3509696 3533120 3569320 3608760 3667920 3729052 3753940 3815480 3842268 3857640 3905256 4107252 4283184 4387120 4504728 4578576 4661315 4802835 4811680 4881570 4890560 5039040 5123024 5134065 5143520 5207008 5264544 5299680 5353980 5386560 5443213 5476336 5532446 5593578 5630910 5710912 5723220 5774016 5818607 6006304 6104768 6172224 6403780 6508760 6580680 6845420 7138640 7217520 7335840 7458104 7507880 7630960 7684536 7715280 7810512 8214504 8298669 8566368 8774240 9009456 9157152 9322630 9605670 9623360 9763140 9925859 10246048 10268130 10287040 10414016 10529088 10599360 10707960 10886426 10952672 11064892 11187156 11261820 11446440 11637214 12012608 12807560 13017520 13161360 13690840 13831115 13983945 14277280 14435040 14671680 14916208 15015760 15261920 15369072 15430560 15621024 16329639 16429008 16597338 17132736 17455821 17548480 18018912 18314304 18645260 19211340 19526280 19851718 20492096 20536260 21415920 21772852 21905344 22129784 22374312 22523640 22892880 23274428 25615120 26035040 26322720 27216065 27381680 27662230 27967890 28554560 28870080 29093035 29777577 29832416 30031520 30523840 30738144 30861120 31242048 32659278 32858016 33194676 34911642 36037824 37290520 38422680 39052560 39703436 41072520 41493345 42831840 43545704 44259568 44748624 45047280 45785760 46548856 49629295 51230240 52070080 52645440 54432130 54763360 55324460 55935780 58186070 59555154 59664832 60063040 61476288 65318556 65716032 66389352 69823284 74581040 76845360 78105120 79406872 81648195 82145040 82986690 85663680 87091408 87279105 88519136 89497248 90094560 91571520 93097712 99258590 102460480 108864260 109526720 110648920 111871560 116372140 119110308 130637112 132778704 139646568 148887885 149162080 153690720 156210240 158813744 163296390 164290080 165973380 168739603 174182816 174558210 177038272 178994496 180189120 186195424 198517180 217728520 221297840 223743120 232744280 238220616 261274224 265557408 279293136 297775770 298324160 307381440 317627488 326592780 328580160 331946760 337479206 348365632 349116420 372390848 397034360 435457040 442595680 447486240 465488560 476441232 506218809 522548448 531114816 558586272 595551540 635254976 653185560 663893520 674958412 698232840 794068720 843698015 870914080 885191360 894972480 930977120 952882464 1012437618 1045096896 1117172544 1191103080 1306371120 1327787040 1349916824 1396465680 1588137440 1687396030 1741828160 1861954240 1905764928 2024875236 2382206160 2531094045 2612742240 2655574080 2699833648 2792931360 3176274880 3374792060 4049750472 4764412320 5062188090 5225484480 5399667296 5585862720 6749584120 8099500944 9528824640 10124376180 10799334592 13499168240 16199001888 20248752360 26998336480 32398003776 40497504720 53996672960 80995009440 161990018880
• Sum of all divisors σ(n): 594321960960
• Sum of proper divisors (its aliquot sum) s(n): 432331942080
• 161990018880 is an abundant number, because the sum of its proper divisors (432331942080) is greater than itself. Its abundance is 270341923200

Bases of 161990018880

• Binary: 10010110110111010110111000011101000000₂
• Hexadecimal: 0x25B75B8740
• Base-36: 22F0OAIO

Squares and roots of 161990018880

• 161990018880 squared (161990018880²) is 26240766216742756454400
• 161990018880 cubed (161990018880³) is 4250742214875825290151497859072000
• The square root of 161990018880 is 402479.8366129663
• The cube root of 161990018880 is 5451.2498200323

Scales and comparisons

• 161,990,018,880 seconds is equal to 5,150 years, 40 weeks, 4 days, 11 hours, 28 minutes.
• To count from 1 to 161,990,018,880 would take you about ten thousand, three hundred one 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 161990018880 cubic inches would be around 454.3 feet tall.

Recreational maths with 161990018880

• 161990018880 backwards is 088810099161
• 161990018880 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 161990018880's digits is 51
• More coming soon!