18130637 has 8 divisors (see below), whose sum is σ = 21144000. Its totient is φ = 15540252.

The previous prime is 18130627. The next prime is 18130657. The reversal of 18130637 is 73603181.

It is not a de Polignac number, because 18130637 - 2⁴ = 18130621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18130627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26087 + ... + 26772.

It is an arithmetic number, because the mean of its divisors is an integer number (2643000).

Almost surely, 2^18130637 is an apocalyptic number.

It is an amenable number.

18130637 is a deficient number, since it is larger than the sum of its proper divisors (3013363).

18130637 is an frugal number, since it uses more digits than its factorization.

18130637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52880 (or 52866 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 18130637 is about 4258.0085720909. The cubic root of 18130637 is about 262.7066225031.

The spelling of 18130637 in words is "eighteen million, one hundred thirty thousand, six hundred thirty-seven".