18385894 has 8 divisors (see below), whose sum is σ = 27616248. Its totient is φ = 9180480.

The previous prime is 18385889. The next prime is 18385909. The reversal of 18385894 is 49858381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4267 + ... + 7414.

It is an arithmetic number, because the mean of its divisors is an integer number (3452031).

Almost surely, 2^18385894 is an apocalyptic number.

18385894 is a deficient number, since it is larger than the sum of its proper divisors (9230354).

18385894 is a wasteful number, since it uses less digits than its factorization.

18385894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12470.

The product of its digits is 276480, while the sum is 46.

The square root of 18385894 is about 4287.8775635505. The cubic root of 18385894 is about 263.9337433208.

The spelling of 18385894 in words is "eighteen million, three hundred eighty-five thousand, eight hundred ninety-four".