18863974 has 8 divisors (see below), whose sum is σ = 28314720. Its totient is φ = 9425736.

The previous prime is 18863963. The next prime is 18863987. The reversal of 18863974 is 47936881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3232 + ... + 6940.

It is an arithmetic number, because the mean of its divisors is an integer number (3539340).

Almost surely, 2^18863974 is an apocalyptic number.

18863974 is a deficient number, since it is larger than the sum of its proper divisors (9450746).

18863974 is a wasteful number, since it uses less digits than its factorization.

18863974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6254.

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

The square root of 18863974 is about 4343.2676638678. The cubic root of 18863974 is about 266.2018461556.

The spelling of 18863974 in words is "eighteen million, eight hundred sixty-three thousand, nine hundred seventy-four".