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18214112454 = 238344382561
BaseRepresentation
bin10000111101101001…
…010100110011000110
31202000101001210002120
4100331221110303012
5244300303044304
612211211350410
71213235254446
oct207551246306
952011053076
1018214112454
1177a74342aa
123643a52406
1319436b9245
14c4b044126
1571909e0d9
hex43da54cc6

18214112454 has 32 divisors (see below), whose sum is σ = 36950788224. Its totient is φ = 5984609280.

The previous prime is 18214112453. The next prime is 18214112491. The reversal of 18214112454 is 45421141281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214112453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179334 + ... + 261894.

It is an arithmetic number, because the mean of its divisors is an integer number (1154712132).

Almost surely, 218214112454 is an apocalyptic number.

18214112454 is an abundant number, since it is smaller than the sum of its proper divisors (18736675770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18214112454 is a wasteful number, since it uses less digits than its factorization.

18214112454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83092.

The product of its digits is 10240, while the sum is 33.

The spelling of 18214112454 in words is "eighteen billion, two hundred fourteen million, one hundred twelve thousand, four hundred fifty-four".

Divisors: 1 2 3 6 83 166 249 443 498 886 1329 2658 36769 73538 82561 110307 165122 220614 247683 495366 6852563 13705126 20557689 36574523 41115378 73149046 109723569 219447138 3035685409 6071370818 9107056227 18214112454