18489445920

Names of 18489445920

• Cardinal: 18489445920 can be written as Eighteen billion, four hundred eighty-nine million, four hundred forty-five thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.848944592 × 10¹⁰

Factors of 18489445920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 11037

Divisors of 18489445920

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 30 32 33 36 40 44 45 48 55 60 66 72 80 88 90 96 99 107 110 120 132 144 160 165 176 180 198 214 220 240 264 288 321 330 352 360 396 428 440 480 495 528 535 642 660 720 792 856 880 963 990 1056 1070 1177 1284 1320 1440 1584 1605 1712 1760 1926 1980 2140 2354 2568 2640 3168 3210 3424 3531 3852 3960 4280 4708 4815 5136 5280 5885 6420 7062 7704 7920 8560 9416 9630 10272 10593 10909 11770 12840 14124 15408 15840 17120 17655 18832 19260 21186 21818 23540 25680 28248 30816 32727 35310 37664 38520 42372 43636 47080 51360 52965 54545 56496 65454 70620 77040 84744 87272 94160 98181 105930 109090 112992 119999 130908 141240 154080 163635 169488 174544 188320 196362 211860 218180 239998 261816 282480 327270 338976 349088 359997 392724 423720 436360 479996 490905 523632 564960 599995 654540 719994 785448 847440 872720 959992 981810 1047264 1079991 1167263 1199990 1309080 1439988 1570896 1694880 1745440 1799985 1919984 1963620 2159982 2334526 2399980 2618160 2879976 3141792 3501789 3599970 3839968 3927240 4319964 4669052 4799960 5236320 5399955 5759952 5836315 7003578 7199940 7854480 8639928 9338104 9599920 10505367 10799910 11519904 11672630 12839893 14007156 14399880 15708960 17279856 17508945 18676208 19199840 21010734 21599820 23345260 25679786 28014312 28799760 34559712 35017890 37352416 38519679 42021468 43199640 46690520 51359572 52526835 56028624 57599520 64199465 70035780 77039358 84042936 86399280 93381040 102719144 105053670 112057248 115559037 128398930 140071560 154078716 168085872 172798560 186762080 192598395 205438288 210107340 231118074 256797860 280143120 308157432 336171744 385196790 410876576 420214680 462236148 513595720 560286240 577795185 616314864 770393580 840429360 924472296 1027191440 1155590370 1232629728 1540787160 1680858720 1848944592 2054382880 2311180740 3081574320 3697889184 4622361480 6163148640 9244722960 18489445920
• Sum of all divisors σ(n): 69480815040
• Sum of proper divisors (its aliquot sum) s(n): 50991369120
• 18489445920 is an abundant number, because the sum of its proper divisors (50991369120) is greater than itself. Its abundance is 32501923200

Bases of 18489445920

• Binary: 10001001110000011101000111000100000₂
• Hexadecimal: 0x44E0E8E20
• Base-36: 8HS4ZS0

Squares and roots of 18489445920

• 18489445920 squared (18489445920²) is 341859610428604646400
• 18489445920 cubed (18489445920³) is 6320794779251953630673522688000
• The square root of 18489445920 is 135975.9019826675
• The cube root of 18489445920 is 2644.2831985941

Scales and comparisons

• 18,489,445,920 seconds is equal to 587 years, 47 weeks, 1 day, 5 hours, 12 minutes.
• To count from 1 to 18,489,445,920 would take you about one thousand, one hundred seventy-five 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 18489445920 cubic inches would be around 220.4 feet tall.

Recreational maths with 18489445920

• 18489445920 backwards is 02954498481
• The number of decimal digits it has is: 11
• The sum of 18489445920's digits is 54
• More coming soon!