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18884204288283 = 31921320492
BaseRepresentation
bin1000100101100110100100…
…10010011101100100011011
32110212022102122222102222010
410102303102102131210123
54433344322244211113
6104055141135401003
73656224120661445
oct422632222354433
973768378872863
1018884204288283
116020823013044
12214ba75983163
13a6ca07b7b6a9
14494000ddd495
1522b34c7e41c3
hex112cd249d91b

18884204288283 has 18 divisors (see below), whose sum is σ = 26574095367324. Its totient is φ = 11926775544768.

The previous prime is 18884204288267. The next prime is 18884204288297. The reversal of 18884204288283 is 38288240248881.

It is not a de Polignac number, because 18884204288283 - 24 = 18884204288267 is a prime.

It is a super-2 number, since 2×188842042882832 (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18884204288203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 142943043 + ... + 143075091.

It is an arithmetic number, because the mean of its divisors is an integer number (1476338631518).

Almost surely, 218884204288283 is an apocalyptic number.

18884204288283 is a deficient number, since it is larger than the sum of its proper divisors (7689891079041).

18884204288283 is an frugal number, since it uses more digits than its factorization.

18884204288283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264139 (or 132071 counting only the distinct ones).

The product of its (nonzero) digits is 100663296, while the sum is 66.

The spelling of 18884204288283 in words is "eighteen trillion, eight hundred eighty-four billion, two hundred four million, two hundred eighty-eight thousand, two hundred eighty-three".

Divisors: 1 3 19 57 361 1083 132049 396147 2508931 7526793 47669689 143009067 17436938401 52310815203 331301829619 993905488857 6294734762761 18884204288283