9938561640

Names of 9938561640

• Cardinal: 9938561640 can be written as Nine billion, nine hundred thirty-eight million, five hundred sixty-one thousand, six hundred forty.

Scientific notation

• Scientific notation: 9.93856164 × 10⁹

Factors of 9938561640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2808

Divisors of 9938561640

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 61 70 73 84 105 120 122 140 146 168 183 210 219 244 280 292 305 365 366 420 427 438 488 511 584 610 730 732 840 854 876 915 1022 1095 1220 1281 1460 1464 1533 1708 1752 1830 2044 2135 2190 2440 2555 2562 2657 2920 3066 3416 3660 4088 4270 4380 4453 5110 5124 5314 6132 6405 7320 7665 7971 8540 8760 8906 10220 10248 10628 12264 12810 13285 13359 15330 15942 17080 17812 18599 20440 21256 22265 25620 26570 26718 30660 31171 31884 35624 37198 39855 44530 51240 53140 53436 55797 61320 62342 63768 66795 74396 79710 89060 92995 93513 106280 106872 111594 124684 133590 148792 155855 159420 162077 178120 185990 187026 193961 223188 249368 267180 278985 311710 318840 324154 371980 374052 387922 446376 467565 486231 534360 557970 581883 623420 648308 743960 748104 775844 810385 935130 969805 972462 1115940 1134539 1163766 1246840 1296616 1357727 1551688 1620770 1870260 1939610 1944924 2231880 2269078 2327532 2431155 2715454 2909415 3241540 3403617 3740520 3879220 3889848 4073181 4538156 4655064 4862310 5430908 5672695 5818830 6483080 6788635 6807234 7758440 8146362 9076312 9724620 10861816 11345390 11637660 11831621 13577270 13614468 16292724 17018085 19449240 20365905 22690780 23275320 23663242 27154540 27228936 32585448 34036170 35494863 40731810 45381560 47326484 54309080 59158105 68072340 70989726 81463620 82821347 94652968 118316210 136144680 141979452 162927240 165642694 177474315 236632420 248464041 283958904 331285388 354948630 414106735 473264840 496928082 662570776 709897260 828213470 993856164 1242320205 1419794520 1656426940 1987712328 2484640410 3312853880 4969280820 9938561640
• Sum of all divisors σ(n): 35121323520
• Sum of proper divisors (its aliquot sum) s(n): 25182761880
• 9938561640 is an abundant number, because the sum of its proper divisors (25182761880) is greater than itself. Its abundance is 15244200240

Bases of 9938561640

• Binary: 1001010000011000100110101001101000₂
• Hexadecimal: 0x250626A68
• Base-36: 4KD5V8O

Squares and roots of 9938561640

• 9938561640 squared (9938561640²) is 98775007472079489600
• 9938561640 cubed (9938561640³) is 981681500252722586369338944000
• The square root of 9938561640 is 99692.3349109649
• The cube root of 9938561640 is 2150.0134587223

Scales and comparisons

• 9,938,561,640 seconds is equal to 316 years, 5 days, 15 hours, 34 minutes.
• To count from 1 to 9,938,561,640 would take you about six hundred thirty-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 9938561640 cubic inches would be around 179.2 feet tall.

Recreational maths with 9938561640

• 9938561640 backwards is 0461658399
• The number of decimal digits it has is: 10
• The sum of 9938561640's digits is 51
• More coming soon!