18996374 has 4 divisors (see below), whose sum is σ = 28494564. Its totient is φ = 9498186.

The previous prime is 18996359. The next prime is 18996377. The reversal of 18996374 is 47369981.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4749092 + ... + 4749095.

It is an arithmetic number, because the mean of its divisors is an integer number (7123641).

Almost surely, 2^18996374 is an apocalyptic number.

18996374 is a deficient number, since it is larger than the sum of its proper divisors (9498190).

18996374 is an equidigital number, since it uses as much as digits as its factorization.

18996374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9498189.

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

The square root of 18996374 is about 4358.4829929690. The cubic root of 18996374 is about 266.8231890126.

The spelling of 18996374 in words is "eighteen million, nine hundred ninety-six thousand, three hundred seventy-four".