18974396 has 12 divisors (see below), whose sum is σ = 37948848. Its totient is φ = 8131872.

The previous prime is 18974383. The next prime is 18974399. The reversal of 18974396 is 69347981.

18974396 is an admirable number.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18974396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18974399) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 338801 + ... + 338856.

It is an arithmetic number, because the mean of its divisors is an integer number (3162404).

Almost surely, 2^18974396 is an apocalyptic number.

It is an amenable number.

18974396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18974396 is a wasteful number, since it uses less digits than its factorization.

18974396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677668 (or 677666 counting only the distinct ones).

The product of its digits is 326592, while the sum is 47.

The square root of 18974396 is about 4355.9609731952. The cubic root of 18974396 is about 266.7202482609.

The spelling of 18974396 in words is "eighteen million, nine hundred seventy-four thousand, three hundred ninety-six".