18331714 has 4 divisors (see below), whose sum is σ = 27497574. Its totient is φ = 9165856.

The previous prime is 18331711. The next prime is 18331721. The reversal of 18331714 is 41713381.

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

It can be written as a sum of positive squares in only one way, i.e., 13816089 + 4515625 = 3717^2 + 2125^2 .

It is not an unprimeable number, because it can be changed into a prime (18331711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4582927 + ... + 4582930.

Almost surely, 2^18331714 is an apocalyptic number.

18331714 is a deficient number, since it is larger than the sum of its proper divisors (9165860).

18331714 is an equidigital number, since it uses as much as digits as its factorization.

18331714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9165859.

The product of its digits is 2016, while the sum is 28.

The square root of 18331714 is about 4281.5550913190. Note that the first 3 decimals coincide. The cubic root of 18331714 is about 263.6742327830.

The spelling of 18331714 in words is "eighteen million, three hundred thirty-one thousand, seven hundred fourteen".