18675648 has 42 divisors (see below), whose sum is σ = 53532024. Its totient is φ = 6225024.

The previous prime is 18675641. The next prime is 18675659. The reversal of 18675648 is 84657681.

It is a happy number.

18675648 is a `hidden beast` number, since 1 + 86 + 7 + 564 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18675641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15636 + ... + 16787.

It is an arithmetic number, because the mean of its divisors is an integer number (1274572).

Almost surely, 2^18675648 is an apocalyptic number.

18675648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18675648 is an abundant number, since it is smaller than the sum of its proper divisors (34856376).

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

18675648 is a wasteful number, since it uses less digits than its factorization.

18675648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32441 (or 32428 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 18675648 is about 4321.5330613105. The cubic root of 18675648 is about 265.3130180373.

The spelling of 18675648 in words is "eighteen million, six hundred seventy-five thousand, six hundred forty-eight".