18564130 has 32 divisors (see below), whose sum is σ = 36591408. Its totient is φ = 6739200.

The previous prime is 18564127. The next prime is 18564149. The reversal of 18564130 is 3146581.

It can be written as a sum of positive squares in 8 ways, for example, as 1565001 + 16999129 = 1251^2 + 4123^2 .

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6760 + ... + 9100.

Almost surely, 2^18564130 is an apocalyptic number.

18564130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18564130 is a deficient number, since it is larger than the sum of its proper divisors (18027278).

18564130 is a wasteful number, since it uses less digits than its factorization.

18564130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422.

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

The square root of 18564130 is about 4308.6111451371. The cubic root of 18564130 is about 264.7838750476.

The spelling of 18564130 in words is "eighteen million, five hundred sixty-four thousand, one hundred thirty".