18378230 has 16 divisors (see below), whose sum is σ = 35625744. Its totient is φ = 6785760.

The previous prime is 18378229. The next prime is 18378251. The reversal of 18378230 is 3287381.

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, 70556 + ... + 70815.

It is an arithmetic number, because the mean of its divisors is an integer number (2226609).

Almost surely, 2^18378230 is an apocalyptic number.

18378230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18378230 is a deficient number, since it is larger than the sum of its proper divisors (17247514).

18378230 is a wasteful number, since it uses less digits than its factorization.

18378230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141391.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18378230 is about 4286.9837881662. The cubic root of 18378230 is about 263.8970653956.

The spelling of 18378230 in words is "eighteen million, three hundred seventy-eight thousand, two hundred thirty".