18219987072

Names of 18219987072

• Cardinal: 18219987072 can be written as Eighteen billion, two hundred nineteen million, nine hundred eighty-seven thousand and seventy-two.

Scientific notation

• Scientific notation: 1.8219987072 × 10¹⁰

Factors of 18219987072

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 285

Divisors of 18219987072

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 19 21 24 27 28 32 36 38 42 48 54 56 57 63 64 72 73 76 81 84 96 108 112 114 126 128 133 144 146 152 162 168 171 181 189 192 216 219 224 228 252 266 288 292 304 324 336 342 362 378 384 399 432 438 448 456 504 511 513 532 543 567 576 584 608 648 657 672 684 724 756 798 864 876 896 912 1008 1022 1026 1064 1086 1134 1152 1168 1197 1216 1267 1296 1314 1344 1368 1387 1448 1512 1533 1539 1596 1629 1728 1752 1824 1971 2016 2044 2052 2128 2172 2268 2336 2394 2432 2534 2592 2628 2688 2736 2774 2896 3024 3066 3078 3192 3258 3439 3456 3504 3591 3648 3801 3942 4032 4088 4104 4161 4256 4344 4536 4599 4672 4788 4887 5068 5184 5256 5472 5548 5792 5913 6048 6132 6156 6384 6516 6878 7008 7182 7296 7602 7884 8064 8176 8208 8322 8512 8688 9072 9198 9344 9576 9709 9774 10136 10317 10368 10512 10773 10944 11096 11403 11584 11826 12096 12264 12312 12483 12768 13032 13213 13756 13797 14016 14364 14661 15204 15768 16352 16416 16644 17024 17376 18144 18396 19152 19418 19548 20272 20634 21024 21546 21888 22192 22806 23168 23652 24073 24192 24528 24624 24966 25536 26064 26426 27512 27594 28032 28728 29127 29322 30408 30951 31536 32704 32832 33288 34209 34752 36288 36792 37449 38304 38836 39096 39639 40544 41268 41391 42048 43092 44384 45612 47304 48146 49056 49248 49932 51072 52128 52852 55024 55188 57456 58254 58644 60816 61902 63072 65408 65664 66576 68418 69504 72219 72576 73584 74898 76608 77672 78192 79278 81088 82536 82782 84096 86184 87381 88768 91224 92491 92853 94608 96292 98112 98496 99864 102627 104256 105704 110048 110376 112347 114912 116508 117288 118917 121632 123804 126144 133152 136836 144438 147168 149796 153216 155344 156384 158556 162176 165072 165564 172368 174762 177536 182448 184982 185706 189216 192584 196224 196992 199728 205254 208512 211408 216657 220096 220752 224694 229824 233016 234576 237834 243264 247608 251047 252288 262143 266304 273672 277473 278559 288876 294336 299592 310688 312768 317112 330144 331128 344736 349524 356751 364896 369964 371412 378432 385168 399456 410508 422816 433314 440192 441504 449388 459648 466032 469152 475668 486528 495216 502094 524286 532608 547344 554946 557118 577752 588672 599184 621376 625536 634224 649971 660288 662256 689472 699048 713502 729792 739928 742824 753141 756864 770336 786429 798912 821016 832419 845632 866628 883008 898776 932064 938304 951336 990432 1004188 1048572 1070253 1094688 1109892 1114236 1155504 1198368 1242752 1268448 1299942 1320576 1324512 1378944 1398096 1427004 1459584 1479856 1485648 1506282 1540672 1572858 1597824 1642032 1664838 1691264 1733256 1757329 1766016 1797552 1864128 1876608 1902672 1949913 1980864 2008376 2097144 2140506 2189376 2219784 2228472 2259423 2311008 2396736 2497257 2536896 2599884 2649024 2796192 2854008 2959712 2971296 3012564 3081344 3145716 3284064 3329676 3466512 3514658 3595104 3728256 3805344 3899826 3961728 4016752 4194288 4281012 4378752 4439568 4456944 4518846 4622016 4793472 4994514 5073792 5199768 5271987 5298048 5592384 5708016 5919424 5942592 6025128 6291432 6568128 6659352 6778269 6933024 7029316 7190208 7491771 7610688 7799652 8033504 8388576 8562024 8879136 8913888 9037692 9244032 9989028 10399536 10543974 11184768 11416032 11838848 11885184 12050256 12582864 13136256 13318704 13556538 13866048 14058632 14380416 14983542 15221376 15599304 15815961 16067008 16777152 17124048 17758272 17827776 18075384 19978056 20334807 20799072 21087948 22832064 24100512 25165728 26637408 27113076 27732096 28117264 29967084 31198608 31631922 32134016 33554304 34248096 35516544 35655552 36150768 39956112 40669614 41598144 42175896 45664128 47447883 48201024 50331456 53274816 54226152 56234528 59934168 62397216 63263844 68496192 72301536 79912224 81339228 83196288 84351792 94895766 96402048 100662912 106549632 108452304 112469056 119868336 124794432 126527688 136992384 142343649 144603072 159824448 162678456 168703584 189791532 216904608 224938112 239736672 249588864 253055376 284687298 289206144 319648896 325356912 337407168 379583064 433809216 479473344 506110752 569374596 650713824 674814336 759166128 867618432 958946688 1012221504 1138749192 1301427648 1518332256 2024443008 2277498384 2602855296 3036664512 4554996768 6073329024 9109993536 18219987072
• Sum of all divisors σ(n): 66488822400
• Sum of proper divisors (its aliquot sum) s(n): 48268835328
• 18219987072 is an abundant number, because the sum of its proper divisors (48268835328) is greater than itself. Its abundance is 30048848256

Bases of 18219987072

• Binary: 10000111101111111101111000010000000₂
• Hexadecimal: 0x43DFEF080
• Base-36: 8DBPK00

Squares and roots of 18219987072

• 18219987072 squared (18219987072²) is 331967928903847133184
• 18219987072 cubed (18219987072³) is 6048451372946709897676742197248
• The square root of 18219987072 is 134981.4323231163
• The cube root of 18219987072 is 2631.3746601197

Scales and comparisons

• 18,219,987,072 seconds is equal to 579 years, 17 weeks, 4 days, 11 hours, 31 minutes, 12 seconds.
• To count from 1 to 18,219,987,072 would take you about one thousand, one hundred fifty-eight 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 18219987072 cubic inches would be around 219.3 feet tall.

Recreational maths with 18219987072

• 18219987072 backwards is 27078991281
• 18219987072 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18219987072's digits is 54
• More coming soon!