18989174 has 16 divisors (see below), whose sum is σ = 29598720. Its totient is φ = 9127080.

The previous prime is 18989161. The next prime is 18989197. The reversal of 18989174 is 47198981.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9167 + ... + 11045.

It is an arithmetic number, because the mean of its divisors is an integer number (1849920).

Almost surely, 2^18989174 is an apocalyptic number.

18989174 is a deficient number, since it is larger than the sum of its proper divisors (10609546).

18989174 is a wasteful number, since it uses less digits than its factorization.

18989174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its digits is 145152, while the sum is 47.

The square root of 18989174 is about 4357.6569392278. The cubic root of 18989174 is about 266.7894743376.

The spelling of 18989174 in words is "eighteen million, nine hundred eighty-nine thousand, one hundred seventy-four".