18243500281821

Names of 18243500281821

• Cardinal: 18243500281821 can be written as Eighteen trillion, two hundred forty-three billion, five hundred million, two hundred eighty-one thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.8243500281821 × 10¹³

Factors of 18243500281821

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 173

Divisors of 18243500281821

• Number of divisors d(n): 324
• Complete list of divisors:
  1 3 9 19 23 27 31 57 69 81 93 97 171 207 243 279 291 361 437 513 589 621 713 837 873 961 1083 1311 1539 1767 1843 1863 2139 2231 2511 2619 2883 3007 3249 3933 4617 5301 5529 5589 6417 6693 7533 7857 8303 8649 9021 9409 9747 11191 11799 13547 15903 16587 18259 19251 20079 22103 23571 24909 25947 27063 28227 29241 33573 35017 35397 40641 42389 47709 49761 54777 57133 57753 60237 66309 69161 74727 77841 81189 84681 87723 93217 100719 105051 106191 121923 127167 143127 149283 164331 171399 173259 178771 180711 198927 207483 216407 224181 233523 243567 254043 257393 279651 291679 302157 315153 346921 365769 381501 419957 447849 492993 514197 536313 542133 596781 622449 649221 672543 730701 762129 772179 805391 838953 875037 906471 945459 1040763 1085527 1097307 1144503 1259871 1314059 1478979 1542591 1608939 1771123 1790343 1867347 1947663 2017629 2143991 2286387 2316537 2416173 2516859 2625111 2719413 2836377 3122289 3256581 3291921 3396649 3433509 3779613 3942177 4111733 4436937 4627773 4826817 5313369 5371029 5541901 5602041 5842989 6431973 6708617 6949611 7248519 7550577 7875333 7979183 8509131 9042049 9366867 9769743 10189947 10300527 11338839 11826531 12335199 13883319 14480451 15940107 16625703 16806123 17528967 19295919 20125851 20848833 21745557 22651731 23625999 23937549 24967121 27126147 28100601 29309229 30569841 33651337 34016517 35479593 37005597 40735829 43441353 47820321 49877109 52586901 57887757 60377553 62546499 65236671 70877997 71812647 74901363 78122927 81378441 84301803 87927687 91709523 100954011 102049551 105296119 106438779 111016791 122207487 127463723 143460963 149631327 171798931 173663271 181132659 195710013 207967127 215437941 224704089 234368781 244135323 263783061 275128569 302862033 315888357 319316337 333050373 366622461 382391169 430382889 448893981 515396793 520989813 543397977 623901381 646313823 674112267 703106343 732405969 773980751 825385707 908586099 947665071 999151119 1099867383 1147173507 1346681943 1546190379 1630193931 1871704143 1938941469 2022336801 2109319029 2197217907 2321942253 2421810737 2725758297 2842995213 3264179689 3299602149 3441520521 3951375413 4638571137 5615112429 6067010403 6327957087 6965826759 7265432211 8177274891 8528985639 9792539067 9898806447 10324561563 11854126239 13915713411 16845337287 18983871261 20897480277 21796296633 25586956917 29377617201 30973684689 35562378717 41747140233 50536011861 62692440831 65388889899 75076132847 88132851603 106687136151 188077322493 196166669697 225228398541 264398554809 320061408453 588500009091 675685195623 793195664427 960184225359 2027055586869 6081166760607 18243500281821
• Sum of all divisors σ(n): 31421748155616
• Sum of proper divisors (its aliquot sum) s(n): 13178247873795
• 18243500281821 is a deficient number, because the sum of its proper divisors (13178247873795) is less than itself. Its deficiency is 5065252408026

Bases of 18243500281821

• Binary: 100001001011110100101010110101000111111011101₂
• Hexadecimal: 0x1097A55A8FDD
• Base-36: 6GSY518T9

Squares and roots of 18243500281821

• 18243500281821 squared (18243500281821²) is 332825302532802906423076041
• 18243500281821 cubed (18243500281821³) is 6071898500554349408426435645041212950661
• The square root of 18243500281821 is 4271241.0704408853
• The cube root of 18243500281821 is 26325.0611844001

Scales and comparisons

• 18,243,500,281,821 seconds is equal to 580,086 years, 45 weeks, 4 days, 15 hours, 10 minutes, 21 seconds.
• To count from 1 to 18,243,500,281,821 would take you about one million, four hundred fifty thousand, two hundred seventeen 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 18243500281821 cubic inches would be around 2193.8 feet tall.

Recreational maths with 18243500281821

• 18243500281821 backwards is 12818200534281
• The number of decimal digits it has is: 14
• The sum of 18243500281821's digits is 45
• More coming soon!