18713198 has 24 divisors (see below), whose sum is σ = 32823792. Its totient is φ = 7977984.

The previous prime is 18713183. The next prime is 18713249. The reversal of 18713198 is 89131781.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24815 + ... + 25557.

It is an arithmetic number, because the mean of its divisors is an integer number (1367658).

Almost surely, 2^18713198 is an apocalyptic number.

18713198 is a deficient number, since it is larger than the sum of its proper divisors (14110594).

18713198 is a wasteful number, since it uses less digits than its factorization.

18713198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016 (or 1009 counting only the distinct ones).

The product of its digits is 12096, while the sum is 38.

The square root of 18713198 is about 4325.8754027364. The cubic root of 18713198 is about 265.4907152944.

The spelling of 18713198 in words is "eighteen million, seven hundred thirteen thousand, one hundred ninety-eight".