18345648 has 40 divisors (see below), whose sum is σ = 47628400. Its totient is φ = 6084864.

The previous prime is 18345581. The next prime is 18345653. The reversal of 18345648 is 84654381.

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, 10158 + ... + 11826.

It is an arithmetic number, because the mean of its divisors is an integer number (1190710).

Almost surely, 2^18345648 is an apocalyptic number.

It is an amenable number.

18345648 is an abundant number, since it is smaller than the sum of its proper divisors (29282752).

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

18345648 is a wasteful number, since it uses less digits than its factorization.

18345648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909 (or 1903 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 18345648 is about 4283.1819947324. The cubic root of 18345648 is about 263.7410224328.

The spelling of 18345648 in words is "eighteen million, three hundred forty-five thousand, six hundred forty-eight".