18130564 has 9 divisors (see below), whose sum is σ = 31743397. Its totient is φ = 9061024.

The previous prime is 18130559. The next prime is 18130583. The reversal of 18130564 is 46503181.

The square root of 18130564 is 4258.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4588164 + 13542400 = 2142^2 + 3680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7452 + ... + 9580.

Almost surely, 2^18130564 is an apocalyptic number.

18130564 is the 4258-th square number.

It is an amenable number.

18130564 is a deficient number, since it is larger than the sum of its proper divisors (13612833).

18130564 is an frugal number, since it uses more digits than its factorization.

18130564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The cubic root of 18130564 is about 262.7062699210.

The spelling of 18130564 in words is "eighteen million, one hundred thirty thousand, five hundred sixty-four".