18151221000

Names of 18151221000

• Cardinal: 18151221000 can be written as Eighteen billion, one hundred fifty-one million, two hundred twenty-one thousand.

Scientific notation

• Scientific notation: 1.8151221 × 10¹⁰

Factors of 18151221000

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 280

Divisors of 18151221000

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 20 22 24 25 30 33 40 44 50 55 60 61 66 71 75 88 100 110 120 122 125 127 132 142 150 165 183 200 213 220 244 250 254 264 275 284 300 305 330 355 366 375 381 426 440 488 500 508 550 568 600 610 635 660 671 710 732 750 762 781 825 852 915 1000 1016 1065 1100 1220 1270 1320 1342 1375 1397 1420 1464 1500 1524 1525 1562 1650 1704 1775 1830 1905 2013 2130 2200 2343 2440 2540 2684 2750 2794 2840 3000 3048 3050 3124 3175 3300 3355 3550 3660 3810 3905 4026 4125 4191 4260 4331 4575 4686 5080 5325 5368 5500 5588 6100 6248 6350 6600 6710 6985 7100 7320 7620 7625 7747 7810 8052 8250 8382 8520 8662 8875 9017 9150 9372 9525 10065 10650 11000 11176 11715 12200 12700 12993 13420 13970 14200 15240 15250 15494 15620 15875 16104 16500 16764 16775 17324 17750 18034 18300 18744 19050 19525 20130 20955 21300 21655 22875 23241 23430 25400 25986 26625 26840 27051 27940 30500 30988 31240 31750 33000 33528 33550 34648 34925 35500 36068 36600 38100 38735 39050 40260 41910 42600 43310 45085 45750 46482 46860 47625 47641 50325 51972 53250 54102 55880 58575 61000 61976 63500 64965 67100 69850 71000 72136 76200 77470 78100 80520 83820 83875 85217 86620 90170 91500 92964 93720 95250 95282 97625 99187 100650 103944 104775 106500 108204 108275 116205 117150 127000 129930 134200 135255 139700 142923 154940 156200 167640 167750 170434 173240 174625 180340 183000 185928 190500 190564 193675 195250 198374 201300 209550 213000 216408 216550 225425 232410 234300 238205 251625 255651 259860 270510 279400 285846 292875 297561 309880 324825 335500 340868 349250 360680 381000 381128 387350 390500 396748 402600 419100 426085 433100 450850 464820 468600 476410 495935 503250 511302 519720 523875 541020 541375 550037 571692 581025 585750 595122 649650 671000 676275 681736 698500 714615 774700 781000 793496 838200 852170 866200 901700 929640 952820 968375 991870 1006500 1022604 1047750 1082040 1082750 1100074 1127125 1143384 1162050 1171500 1190244 1191025 1278255 1299300 1352550 1397000 1429230 1487805 1549400 1624125 1650111 1704340 1803400 1905640 1936750 1983740 2013000 2045208 2095500 2130425 2165500 2200148 2254250 2324100 2343000 2380488 2382050 2479675 2556510 2598600 2705100 2750185 2858460 2905125 2975610 3248250 3300222 3381375 3408680 3573075 3873500 3967480 4191000 4260850 4331000 4400296 4508500 4648200 4764100 4959350 5113020 5410200 5500370 5716920 5810250 5951220 5955125 6050407 6391275 6496500 6600444 6762750 7146150 7439025 7747000 8250555 8521700 9017000 9528200 9918700 10226040 10652125 11000740 11620500 11902440 11910250 12100814 12398375 12782550 12993000 13200888 13525500 13750925 14292300 14878050 16501110 17043400 17865375 18151221 19837400 21304250 22001480 23241000 23820500 24201628 24796750 25565100 27051000 27501850 28584600 29756100 30252035 31956375 33002220 35730750 36302442 37195125 41252775 42608500 47641000 48403256 49593500 51130200 55003700 59512200 60504070 63912750 66004440 68754625 71461500 72604884 74390250 82505550 85217000 90756105 99187000 110007400 121008140 127825500 137509250 142923000 145209768 148780500 151260175 165011100 181512210 206263875 242016280 255651000 275018500 297561000 302520350 330022200 363024420 412527750 453780525 550037000 605040700 726048840 756300875 825055500 907561050 1210081400 1512601750 1650111000 1815122100 2268902625 3025203500 3630244200 4537805250 6050407000 9075610500 18151221000
• Sum of all divisors σ(n): 64178749440
• Sum of proper divisors (its aliquot sum) s(n): 46027528440
• 18151221000 is an abundant number, because the sum of its proper divisors (46027528440) is greater than itself. Its abundance is 27876307440

Bases of 18151221000

• Binary: 10000111001111001011010011100001000₂
• Hexadecimal: 0x439E5A708
• Base-36: 8C6RNRC

Squares and roots of 18151221000

• 18151221000 squared (18151221000²) is 329466823790841000000
• 18151221000 cubed (18151221000³) is 5980225130795612766861000000000
• The square root of 18151221000 is 134726.4673328889
• The cube root of 18151221000 is 2628.0600323597

Scales and comparisons

• 18,151,221,000 seconds is equal to 577 years, 7 weeks, 6 days, 13 hours, 50 minutes.
• To count from 1 to 18,151,221,000 would take you about one thousand, one hundred fifty-four 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 18151221000 cubic inches would be around 219 feet tall.

Recreational maths with 18151221000

• 18151221000 backwards is 00012215181
• The number of decimal digits it has is: 11
• The sum of 18151221000's digits is 21
• More coming soon!