9918909420

Names of 9918909420

• Cardinal: 9918909420 can be written as Nine billion, nine hundred eighteen million, nine hundred nine thousand, four hundred twenty.

Scientific notation

• Scientific notation: 9.91890942 × 10⁹

Factors of 9918909420

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1199

Divisors of 9918909420

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 17 20 21 28 30 31 34 35 41 42 51 60 62 68 70 82 84 85 93 102 105 119 123 124 140 155 164 170 186 204 205 210 217 238 246 255 287 310 340 357 372 410 420 434 465 476 492 510 527 574 595 615 620 651 697 714 820 861 868 930 1020 1054 1085 1093 1148 1190 1230 1271 1302 1394 1428 1435 1581 1722 1785 1860 2091 2108 2170 2186 2380 2460 2542 2604 2635 2788 2870 3162 3255 3279 3444 3485 3570 3689 3813 4182 4305 4340 4372 4879 5084 5270 5465 5740 6324 6355 6510 6558 6970 7140 7378 7626 7651 7905 8364 8610 8897 9758 10455 10540 10930 11067 12710 13020 13116 13940 14637 14756 15252 15302 15810 16395 17220 17794 18445 18581 19065 19516 20910 21607 21860 22134 22953 24395 25420 26691 29274 30604 31620 32790 33883 35588 36890 37162 38130 38255 41820 43214 44268 44485 44813 45906 48790 53382 55335 55743 58548 64821 65580 67766 73185 73780 74324 76260 76510 86428 88970 89626 91812 92905 97580 101649 106764 108035 110670 111486 114765 129642 130067 133455 134439 135532 146370 151249 153020 169415 177940 179252 185810 203298 216070 221340 222972 224065 229530 237181 259284 260134 266910 268878 278715 292740 302498 313691 324105 338830 371620 390201 406596 432140 448130 453747 459060 474362 508245 520268 533820 537756 557430 576011 604996 627382 648210 650335 672195 677660 711543 756245 761821 780402 896260 907494 941073 948724 1016490 1114860 1152022 1185905 1254764 1296420 1300670 1344390 1389203 1423086 1512490 1523642 1560804 1568455 1728033 1814988 1882146 1951005 2032980 2268735 2285463 2304044 2371810 2601340 2688780 2778406 2846172 2880055 3024980 3047284 3136910 3456066 3557715 3764292 3809105 3902010 4032077 4167609 4537470 4570926 4705365 4743620 5332747 5556812 5760110 6273820 6912132 6946015 7115430 7618210 7804020 8064154 8335218 8640165 9074940 9141852 9410730 9724421 10665494 11427315 11520220 12096231 13892030 14230860 15236420 15998241 16128308 16670436 17280330 18821460 19448842 20160385 20838045 21330988 22854630 23616451 24192462 26663735 27784060 29173263 31996482 34560660 38897684 40320770 41676090 45709260 47232902 48384924 48622105 53327470 58346526 60481155 63992964 70849353 79991205 80641540 83352180 94465804 97244210 106654940 116693052 118082255 120962310 141698706 145866315 159982410 165315157 194488420 236164510 241924620 283397412 291732630 319964820 330630314 354246765 472329020 495945471 583465260 661260628 708493530 826575785 991890942 1416987060 1653151570 1983781884 2479727355 3306303140 4959454710 9918909420
• Sum of all divisors σ(n): 35570368512
• Sum of proper divisors (its aliquot sum) s(n): 25651459092
• 9918909420 is an abundant number, because the sum of its proper divisors (25651459092) is greater than itself. Its abundance is 15732549672

Bases of 9918909420

• Binary: 1001001111001101101000101111101100₂
• Hexadecimal: 0x24F368BEC
• Base-36: 4K1GNHO

Squares and roots of 9918909420

• 9918909420 squared (9918909420²) is 98384764082164736400
• 9918909420 cubed (9918909420³) is 975869563239061457869776888000
• The square root of 9918909420 is 99593.7217900809
• The cube root of 9918909420 is 2148.5953991379

Scales and comparisons

• 9,918,909,420 seconds is equal to 315 years, 20 weeks, 2 days, 4 hours, 37 minutes.
• To count from 1 to 9,918,909,420 would take you about six hundred thirty 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 9918909420 cubic inches would be around 179 feet tall.

Recreational maths with 9918909420

• 9918909420 backwards is 0249098199
• 9918909420 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 9918909420's digits is 51
• More coming soon!