18378675 has 54 divisors (see below), whose sum is σ = 38315628. Its totient is φ = 8396640.

The previous prime is 18378637. The next prime is 18378697. The reversal of 18378675 is 57687381.

It is not a de Polignac number, because 18378675 - 2⁶ = 18378611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18378675.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10192 + ... + 11858.

Almost surely, 2^18378675 is an apocalyptic number.

18378675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18378675 is an abundant number, since it is smaller than the sum of its proper divisors (19936953).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18378675 is a wasteful number, since it uses less digits than its factorization.

18378675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697 (or 1682 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 18378675 is about 4287.0356891447. The cubic root of 18378675 is about 263.8991953295.

The spelling of 18378675 in words is "eighteen million, three hundred seventy-eight thousand, six hundred seventy-five".