18748396 has 6 divisors (see below), whose sum is σ = 32809700. Its totient is φ = 9374196.

The previous prime is 18748391. The next prime is 18748403. The reversal of 18748396 is 69384781.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18748391) 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 as a sum of consecutive naturals, namely, 2343546 + ... + 2343553.

Almost surely, 2^18748396 is an apocalyptic number.

It is an amenable number.

18748396 is a deficient number, since it is larger than the sum of its proper divisors (14061304).

18748396 is a wasteful number, since it uses less digits than its factorization.

18748396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687103 (or 4687101 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 18748396 is about 4329.9418009946. The cubic root of 18748396 is about 265.6570665048.

The spelling of 18748396 in words is "eighteen million, seven hundred forty-eight thousand, three hundred ninety-six".