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18969160104 = 2332263460557
BaseRepresentation
bin10001101010101001…
…100110100110101000
31210221222211011202100
4101222221212212220
5302322101110404
612414142533400
71241034125526
oct215251464650
953858734670
1018969160104
118054661824
123814897260
131a33c603bb
14cbd42b316
157604e6d39
hex46aa669a8

18969160104 has 24 divisors (see below), whose sum is σ = 51374808810. Its totient is φ = 6323053344.

The previous prime is 18969160087. The next prime is 18969160181. The reversal of 18969160104 is 40106196981.

It can be written as a sum of positive squares in only one way, i.e., 13294551204 + 5674608900 = 115302^2 + 75330^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 18969160104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131730207 + ... + 131730350.

Almost surely, 218969160104 is an apocalyptic number.

It is an amenable number.

18969160104 is an abundant number, since it is smaller than the sum of its proper divisors (32405648706).

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

18969160104 is a wasteful number, since it uses less digits than its factorization.

18969160104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263460569 (or 263460562 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 18969160104 in words is "eighteen billion, nine hundred sixty-nine million, one hundred sixty thousand, one hundred four".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 263460557 526921114 790381671 1053842228 1580763342 2107684456 2371145013 3161526684 4742290026 6323053368 9484580052 18969160104