18130430 has 16 divisors (see below), whose sum is σ = 32774544. Its totient is φ = 7221120.

The previous prime is 18130397. The next prime is 18130447. The reversal of 18130430 is 3403181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352 + ... + 6171.

It is an arithmetic number, because the mean of its divisors is an integer number (2048409).

Almost surely, 2^18130430 is an apocalyptic number.

18130430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18130430 is a deficient number, since it is larger than the sum of its proper divisors (14644114).

18130430 is a wasteful number, since it uses less digits than its factorization.

18130430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 18130430 is about 4257.9842648840. The cubic root of 18130430 is about 262.7056227133.

The spelling of 18130430 in words is "eighteen million, one hundred thirty thousand, four hundred thirty".