18418948 has 12 divisors (see below), whose sum is σ = 32279632. Its totient is φ = 9196200.

The previous prime is 18418943. The next prime is 18418951. The reversal of 18418948 is 84981481.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18418943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223 + ... + 6073.

Almost surely, 2^18418948 is an apocalyptic number.

It is an amenable number.

18418948 is a deficient number, since it is larger than the sum of its proper divisors (13860684).

18418948 is a wasteful number, since it uses less digits than its factorization.

18418948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6642 (or 6640 counting only the distinct ones).

The product of its digits is 73728, while the sum is 43.

The square root of 18418948 is about 4291.7301872322. The cubic root of 18418948 is about 264.0918145601.

The spelling of 18418948 in words is "eighteen million, four hundred eighteen thousand, nine hundred forty-eight".