18931714 has 16 divisors (see below), whose sum is σ = 31193280. Its totient is φ = 8577360.

The previous prime is 18931699. The next prime is 18931819. The reversal of 18931714 is 41713981.

It is a self number, because there is not a number n which added to its sum of digits gives 18931714.

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, 9957 + ... + 11704.

It is an arithmetic number, because the mean of its divisors is an integer number (1949580).

Almost surely, 2^18931714 is an apocalyptic number.

18931714 is a deficient number, since it is larger than the sum of its proper divisors (12261566).

18931714 is a wasteful number, since it uses less digits than its factorization.

18931714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21705.

The product of its digits is 6048, while the sum is 34.

The square root of 18931714 is about 4351.0589515657. The cubic root of 18931714 is about 266.5201066181.

The spelling of 18931714 in words is "eighteen million, nine hundred thirty-one thousand, seven hundred fourteen".