18157825160 has 16 divisors (see below), whose sum is σ = 40855106700. Its totient is φ = 7263130048.

The previous prime is 18157825159. The next prime is 18157825199. The reversal of 18157825160 is 6152875181.

It can be written as a sum of positive squares in 2 ways, for example, as 18088636036 + 69189124 = 134494^2 + 8318^2 .

It is a super-2 number, since 2×18157825160² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226972775 + ... + 226972854.

Almost surely, 2^18157825160 is an apocalyptic number.

18157825160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18157825160 is an abundant number, since it is smaller than the sum of its proper divisors (22697281540).

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

18157825160 is a wasteful number, since it uses less digits than its factorization.

18157825160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453945640 (or 453945636 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 44.

The spelling of 18157825160 in words is "eighteen billion, one hundred fifty-seven million, eight hundred twenty-five thousand, one hundred sixty".