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18130429764 = 22324112283489
BaseRepresentation
bin10000111000101010…
…000110011101000100
31201210112121021000200
4100320222012131010
5244112342223024
612155022010500
71211201052546
oct207052063504
951715537020
1018130429764
117764178257
12361ba16a30
13192c269865
14c3dc9d696
15711a6e2c9
hex438a86744

18130429764 has 36 divisors (see below), whose sum is σ = 46947498780. Its totient is φ = 5896074240.

The previous prime is 18130429727. The next prime is 18130429777. The reversal of 18130429764 is 46792403181.

It can be written as a sum of positive squares in 2 ways, for example, as 10121969664 + 8008460100 = 100608^2 + 89490^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6140269 + ... + 6143220.

Almost surely, 218130429764 is an apocalyptic number.

It is an amenable number.

18130429764 is an abundant number, since it is smaller than the sum of its proper divisors (28817069016).

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

18130429764 is a wasteful number, since it uses less digits than its factorization.

18130429764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283540 (or 12283535 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 18130429764 in words is "eighteen billion, one hundred thirty million, four hundred twenty-nine thousand, seven hundred sixty-four".

Divisors: 1 2 3 4 6 9 12 18 36 41 82 123 164 246 369 492 738 1476 12283489 24566978 36850467 49133956 73700934 110551401 147401868 221102802 442205604 503623049 1007246098 1510869147 2014492196 3021738294 4532607441 6043476588 9065214882 18130429764