18974196 has 24 divisors (see below), whose sum is σ = 49192640. Its totient is φ = 6324696.

The previous prime is 18974173. The next prime is 18974237. The reversal of 18974196 is 69147981.

It is a happy number.

It is a super-2 number, since 2×18974196² = 720040227692832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87736 + ... + 87951.

Almost surely, 2^18974196 is an apocalyptic number.

It is an amenable number.

18974196 is an abundant number, since it is smaller than the sum of its proper divisors (30218444).

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

18974196 is a wasteful number, since it uses less digits than its factorization.

18974196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175700 (or 175692 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 18974196 is about 4355.9380160879. The cubic root of 18974196 is about 266.7193111342.

The spelling of 18974196 in words is "eighteen million, nine hundred seventy-four thousand, one hundred ninety-six".