18748668 has 24 divisors (see below), whose sum is σ = 46049920. Its totient is φ = 5920560.

The previous prime is 18748661. The next prime is 18748673. The reversal of 18748668 is 86684781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18748661) 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 7 ways as a sum of consecutive naturals, for example, 40888 + ... + 41343.

Almost surely, 2^18748668 is an apocalyptic number.

It is an amenable number.

18748668 is an abundant number, since it is smaller than the sum of its proper divisors (27301252).

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

18748668 is a wasteful number, since it uses less digits than its factorization.

18748668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82257 (or 82255 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 18748668 is about 4329.9732100788. The cubic root of 18748668 is about 265.6583512079.

The spelling of 18748668 in words is "eighteen million, seven hundred forty-eight thousand, six hundred sixty-eight".