18129121920

Names of 18129121920

• Cardinal: 18129121920 can be written as Eighteen billion, one hundred twenty-nine million, one hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.812912192 × 10¹⁰

Factors of 18129121920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 91

Divisors of 18129121920

• Number of divisors d(n): 1344
• 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 49 52 54 56 60 61 63 64 65 70 72 78 80 81 84 90 91 96 98 104 105 108 112 117 120 122 126 128 130 135 140 144 147 156 160 162 168 180 182 183 189 192 195 196 208 210 216 224 234 240 243 244 245 252 260 270 273 280 288 294 305 312 315 320 324 336 351 360 364 366 378 384 390 392 405 416 420 427 432 441 448 455 468 480 486 488 490 504 520 540 546 549 560 567 576 585 588 610 624 630 637 640 648 672 702 720 728 729 732 735 756 780 784 793 810 819 832 840 854 864 882 896 910 915 936 945 960 972 976 980 1008 1040 1053 1080 1092 1098 1120 1134 1152 1170 1176 1215 1220 1248 1260 1274 1281 1296 1323 1344 1365 1404 1440 1456 1458 1464 1470 1512 1560 1568 1586 1620 1638 1647 1664 1680 1701 1708 1728 1755 1764 1820 1830 1872 1890 1911 1920 1944 1952 1960 2016 2080 2106 2135 2160 2184 2196 2205 2240 2268 2340 2352 2379 2430 2440 2457 2496 2520 2548 2562 2592 2646 2688 2730 2745 2808 2835 2880 2912 2916 2928 2940 2989 3024 3120 3136 3159 3172 3185 3240 3276 3294 3360 3402 3416 3456 3510 3528 3640 3645 3660 3744 3780 3822 3843 3888 3904 3920 3965 3969 4032 4095 4160 4212 4270 4320 4368 4392 4410 4480 4536 4680 4704 4758 4860 4880 4914 4941 4992 5040 5096 5103 5124 5184 5265 5292 5460 5490 5551 5616 5670 5733 5760 5824 5832 5856 5880 5978 6048 6240 6272 6318 6344 6370 6405 6480 6552 6588 6615 6720 6804 6832 7020 7056 7137 7280 7290 7320 7371 7488 7560 7644 7686 7776 7808 7840 7930 7938 8064 8190 8235 8320 8424 8505 8540 8640 8736 8784 8820 8967 9072 9360 9408 9477 9516 9555 9720 9760 9828 9882 10080 10192 10206 10248 10368 10530 10584 10920 10980 11102 11232 11340 11466 11529 11648 11664 11712 11760 11895 11907 11956 12096 12285 12480 12636 12688 12740 12810 12960 13104 13176 13230 13440 13608 13664 14040 14112 14274 14560 14580 14640 14742 14823 14945 14976 15120 15288 15372 15552 15680 15795 15860 15876 16380 16470 16653 16848 17010 17080 17199 17280 17472 17568 17640 17934 18144 18720 18816 18954 19032 19110 19215 19440 19520 19656 19764 19845 20160 20384 20412 20496 21060 21168 21411 21840 21960 22113 22204 22464 22680 22932 23058 23328 23424 23520 23790 23814 23912 24192 24570 24705 24960 25272 25376 25480 25515 25620 25920 26208 26352 26460 26901 27216 27328 27755 28080 28224 28548 28665 29120 29160 29280 29484 29646 29890 30240 30576 30744 31104 31360 31590 31720 31752 32760 32940 33306 33696 34020 34160 34398 34587 34944 35136 35280 35685 35721 35868 36288 36855 37440 37908 38064 38220 38430 38857 38880 39040 39312 39528 39690 40320 40768 40824 40992 42120 42336 42822 43680 43920 44226 44408 44469 44835 44928 45360 45864 46116 46656 47040 47385 47580 47628 47824 49140 49410 49959 50544 50752 50960 51030 51240 51597 51840 52416 52704 52920 53802 54432 54656 55510 56160 56448 57096 57330 57645 58240 58320 58560 58968 59292 59535 59780 60480 61152 61488 63180 63440 63504 64233 65520 65880 66339 66612 67392 68040 68320 68796 69174 70272 70560 71370 71442 71736 72576 73710 74115 74880 75816 76128 76440 76860 77714 77760 78624 79056 79380 80703 81536 81648 81984 83265 84240 84672 85644 85995 87360 87840 88452 88816 88938 89670 90720 91728 92232 93312 94080 94770 95160 95256 95648 98280 98820 99918 101088 101504 101920 102060 102480 103194 103761 104832 105408 105840 107055 107604 108864 110565 111020 112320 114192 114660 115290 116571 116640 117120 117936 118584 119070 119560 120960 122304 122976 126360 126880 127008 128466 131040 131760 132678 133224 134505 134784 136080 136640 137592 138348 141120 142740 142884 143472 147420 148230 149877 151632 152256 152880 153720 154791 155428 155520 157248 158112 158760 161406 163296 163968 166530 168480 169344 171288 171990 172935 174720 175680 176904 177632 177876 178605 179340 181440 183456 184464 189540 190320 190512 191296 192699 194285 196560 197640 199836 202176 203840 204120 204960 206388 207522 210816 211680 214110 215208 217728 221130 222040 222345 224640 228384 229320 230580 233142 233280 235872 237168 238140 239120 242109 244608 245952 249795 252720 253760 254016 256932 257985 262080 263520 265356 266448 269010 272160 273280 275184 276696 282240 285480 285768 286944 294840 296460 299754 303264 304512 305760 307440 309582 310856 311283 314496 316224 317520 321165 322812 326592 331695 333060 336960 342576 343980 345870 349713 351360 353808 355264 355752 357210 358680 362880 366912 368928 379080 380640 381024 382592 385398 388570 393120 395280 399672 403515 404352 407680 408240 409920 412776 415044 423360 428220 430416 442260 444080 444690 449631 456768 458640 461160 464373 466284 466560 471744 474336 476280 478240 484218 491904 499590 505440 507520 508032 513864 515970 518805 524160 527040 530712 532896 538020 544320 550368 553392 570960 571536 573888 578097 582855 589680 592920 599508 606528 611520 614880 619164 621712 622566 632448 635040 642330 645624 653184 663390 666120 673920 685152 687960 691740 699426 707616 710528 711504 714420 717360 726327 733824 737856 749385 758160 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9906624 9961056 10277280 10329984 10491390 10614240 10657920 10791144 10894905 11007360 11067840 11190816 11430720 11561940 11621232 11990160 12332736 12383280 12434240 12451320 12589668 12912480 13281408 13488930 13703040 13988520 14152320 14230080 14388192 14526540 14859936 14921088 15415920 15494976 15737085 15986880 16186716 16511040 16601760 16786224 17216640 17431848 17985240 18499104 18574920 18651360 18884502 19184256 19368720 19813248 19922112 20233395 20554560 20982780 21228480 21582288 21789810 22135680 22381632 22861440 23123880 23242464 23980320 24665472 24766560 24868480 24902640 25179336 25824960 26977860 27977040 28326753 28460160 28776384 29053080 29719872 30831840 30989952 31474170 31973760 32373432 33022080 33203520 33572448 34863696 35970480 36998208 37149840 37302720 37769004 38737440 39844224 40466790 41109120 41965560 42456960 43164576 43579620 44763264 46247760 46484928 47211255 47960640 49533120 49805280 50358672 51649920 53955720 55954080 56653506 57552768 58106160 59439744 61663680 62948340 64746864 66407040 67144896 69727392 71940960 73996416 74299680 74605440 75538008 77474880 80933580 83931120 86329152 87159240 92495520 92969856 94422510 95921280 99066240 99610560 100717344 107911440 111908160 113307012 116212320 123327360 125896680 129493728 134289792 139454784 141633765 143881920 148599360 151076016 154949760 161867160 167862240 172658304 174318480 184991040 188845020 199221120 201434688 215822880 223816320 226614024 232424640 251793360 258987456 278909568 283267530 287763840 297198720 302152032 323734320 335724480 348636960 369982080 377690040 402869376 431645760 453228048 464849280 503586720 517974912 566535060 604304064 647468640 671448960 697273920 755380080 863291520 906456096 1007173440 1133070120 1208608128 1294937280 1394547840 1510760160 1812912192 2014346880 2266140240 2589874560 3021520320 3625824384 4532280480 6043040640 9064560960 18129121920
• Sum of all divisors σ(n): 82738220040
• Sum of proper divisors (its aliquot sum) s(n): 64609098120
• 18129121920 is an abundant number, because the sum of its proper divisors (64609098120) is greater than itself. Its abundance is 46479976200

Bases of 18129121920

• Binary: 10000111000100101000111001010000000₂
• Hexadecimal: 0x438947280
• Base-36: 8BTM000

Squares and roots of 18129121920

• 18129121920 squared (18129121920²) is 328665061590224486400
• 18129121920 cubed (18129121920³) is 5958408972413488794114981888000
• The square root of 18129121920 is 134644.4277346819
• The cube root of 18129121920 is 2626.9930463851

Scales and comparisons

• 18,129,121,920 seconds is equal to 576 years, 23 weeks, 2 days, 19 hours, 12 minutes.
• To count from 1 to 18,129,121,920 would take you about one thousand, one hundred fifty-two 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 18129121920 cubic inches would be around 218.9 feet tall.

Recreational maths with 18129121920

• 18129121920 backwards is 02912192181
• 18129121920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18129121920's digits is 36
• More coming soon!