18130888 has 16 divisors (see below), whose sum is σ = 34914780. Its totient is φ = 8820288.

The previous prime is 18130867. The next prime is 18130909. The reversal of 18130888 is 88803181.

It is an interprime number because it is at equal distance from previous prime (18130867) and next prime (18130909).

It can be written as a sum of positive squares in 2 ways, for example, as 18130564 + 324 = 4258^2 + 18^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30331 + ... + 30922.

Almost surely, 2^18130888 is an apocalyptic number.

It is an amenable number.

18130888 is a deficient number, since it is larger than the sum of its proper divisors (16783892).

18130888 is a wasteful number, since it uses less digits than its factorization.

18130888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61296 (or 61292 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 37.

The square root of 18130888 is about 4258.0380458610. The cubic root of 18130888 is about 262.7078347983.

The spelling of 18130888 in words is "eighteen million, one hundred thirty thousand, eight hundred eighty-eight".