18121253040

Names of 18121253040

• Cardinal: 18121253040 can be written as Eighteen billion, one hundred twenty-one million, two hundred fifty-three thousand and forty.

Scientific notation

• Scientific notation: 1.812125304 × 10¹⁰

Factors of 18121253040

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 470

Divisors of 18121253040

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 19 20 22 24 27 30 33 36 38 40 44 45 48 54 55 57 60 66 72 76 80 88 90 95 99 108 110 114 120 132 135 137 144 152 165 171 176 180 190 198 209 216 220 228 240 264 270 274 285 293 297 304 330 342 360 380 396 411 418 432 440 456 495 513 528 540 548 570 586 594 627 660 684 685 720 760 792 822 836 855 879 880 912 990 1026 1045 1080 1096 1140 1172 1188 1233 1254 1320 1368 1370 1465 1485 1507 1520 1584 1644 1672 1710 1758 1881 1980 2052 2055 2090 2160 2192 2280 2344 2376 2466 2508 2565 2603 2637 2640 2736 2740 2930 2970 3014 3135 3223 3288 3344 3420 3516 3699 3762 3960 4104 4110 4180 4395 4521 4560 4688 4752 4932 5016 5130 5206 5274 5480 5567 5643 5860 5940 6028 6165 6270 6446 6576 6840 7032 7398 7524 7535 7809 7911 7920 8208 8220 8360 8790 9042 9405 9669 9864 10032 10260 10412 10548 10960 11134 11286 11720 11880 12056 12330 12540 12892 13015 13185 13563 13680 14064 14796 15048 15070 15618 15822 16115 16440 16701 16720 17580 18084 18495 18810 19338 19728 20520 20824 21096 22268 22572 22605 23427 23440 23760 24112 24660 25080 25784 26030 26370 27126 27835 28215 28633 29007 29592 30096 30140 31236 31644 32230 32880 33402 35160 36168 36990 37620 38676 39045 39555 40141 40689 41040 41648 42192 44536 45144 45210 46854 48345 49320 50103 50160 51568 52060 52740 54252 55670 56430 57266 58014 59184 60280 61237 62472 63288 64460 66804 67815 70281 70320 72336 73980 75240 77352 78090 79110 80282 81378 83505 85899 87021 89072 90288 90420 93708 96690 98640 100206 104120 105480 108504 111340 112860 114532 116028 117135 120423 120560 122474 124944 126576 128920 133608 135630 140562 143165 145035 147960 150309 150480 154704 156180 158220 160564 162756 167010 171798 174042 180840 183711 187416 193380 200412 200705 203445 208240 210960 217008 222680 225720 229064 232056 234270 240846 244948 250515 257697 257840 267216 271260 281124 286330 290070 295920 300618 306185 312360 316440 321128 325512 334020 343596 348084 351405 361269 361680 367422 374832 386760 400824 401410 406890 429495 435105 441551 445360 451440 458128 464112 468540 481692 489896 501030 515394 542520 551133 562248 572660 580140 601236 602115 612370 624720 632880 642256 651024 668040 687192 696168 702810 722538 734844 751545 762679 773091 773520 801648 802820 813780 858990 870210 883102 918555 937080 963384 979792 1002060 1030788 1083807 1085040 1102266 1124496 1145320 1160280 1202472 1204230 1224740 1288485 1324653 1336080 1374384 1392336 1405620 1445076 1469688 1503090 1525358 1546182 1605640 1627560 1653399 1717980 1740420 1766204 1806345 1837110 1874160 1926768 2004120 2061576 2167614 2204532 2207755 2288037 2290640 2320560 2404944 2408460 2449480 2576970 2649306 2755665 2811240 2890152 2939376 3006180 3050716 3092364 3211280 3255120 3306798 3435960 3480840 3532408 3612690 3674220 3813395 3865455 3973959 4008240 4123152 4335228 4409064 4415510 4576074 4816920 4898960 5153940 5298612 5419035 5511330 5622480 5780304 6012360 6101432 6184728 6613596 6623265 6864111 6871920 6961680 7064816 7225380 7348440 7626790 7730910 7947918 8266995 8389469 8670456 8818128 8831020 9152148 9633840 10307880 10597224 10838070 11022660 11440185 11921877 12024720 12202864 12369456 13227192 13246530 13728222 14450760 14696880 15253580 15461820 15895836 16533990 16778938 17340912 17662040 18304296 19869795 20592333 20615760 21194448 21676140 22045320 22880370 23843754 25168407 26454384 26493060 27456444 28901520 30507160 30923640 31791672 33067980 33557876 34320555 35324080 36608592 39739590 41184666 41947345 43352280 44090640 45760740 47687508 50336814 52986120 54912888 59609385 61014320 61847280 63583344 66135960 67115752 68641110 75505221 79479180 82369332 83894690 86704560 91521480 95375016 100673628 102961665 105972240 109825776 119218770 125842035 132271920 134231504 137282220 151010442 158958360 164738664 167789380 183042960 190750032 201347256 205923330 226515663 238437540 251684070 274564440 302020884 317916720 329477328 335578760 377526105 402694512 411846660 453031326 476875080 503368140 549128880 604041768 671157520 755052210 823693320 906062652 953750160 1006736280 1132578315 1208083536 1510104420 1647386640 1812125304 2013472560 2265156630 3020208840 3624250608 4530313260 6040417680 9060626520 18121253040
• Sum of all divisors σ(n): 72445363200
• Sum of proper divisors (its aliquot sum) s(n): 54324110160
• 18121253040 is an abundant number, because the sum of its proper divisors (54324110160) is greater than itself. Its abundance is 36202857120

Bases of 18121253040

• Binary: 10000111000000111000110000010110000₂
• Hexadecimal: 0x4381C60B0
• Base-36: 8BOXCC0

Squares and roots of 18121253040

• 18121253040 squared (18121253040²) is 328379811739709241600
• 18121253040 cubed (18121253040³) is 5950653661762833783060094464000
• The square root of 18121253040 is 134615.2035989991
• The cube root of 18121253040 is 2626.6129124281

Scales and comparisons

• 18,121,253,040 seconds is equal to 576 years, 10 weeks, 2 days, 17 hours, 24 minutes.
• To count from 1 to 18,121,253,040 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 18121253040 cubic inches would be around 218.9 feet tall.

Recreational maths with 18121253040

• 18121253040 backwards is 04035212181
• 18121253040 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18121253040's digits is 27
• More coming soon!