18314385 has 32 divisors (see below), whose sum is σ = 31104000. Its totient is φ = 9176256.

The previous prime is 18314377. The next prime is 18314393. The reversal of 18314385 is 58341381.

It is an interprime number because it is at equal distance from previous prime (18314377) and next prime (18314393).

It is not a de Polignac number, because 18314385 - 2³ = 18314377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50836 + ... + 51194.

It is an arithmetic number, because the mean of its divisors is an integer number (972000).

Almost surely, 2^18314385 is an apocalyptic number.

18314385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18314385 is a deficient number, since it is larger than the sum of its proper divisors (12789615).

18314385 is a wasteful number, since it uses less digits than its factorization.

18314385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565.

The product of its digits is 11520, while the sum is 33.

The square root of 18314385 is about 4279.5309322401. The cubic root of 18314385 is about 263.5911226913.

It can be divided in two parts, 1831 and 4385, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 18314385 in words is "eighteen million, three hundred fourteen thousand, three hundred eighty-five".