18311714 has 4 divisors (see below), whose sum is σ = 27467574. Its totient is φ = 9155856.

The previous prime is 18311693. The next prime is 18311719. The reversal of 18311714 is 41711381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41711381 = 383 ⋅108907.

It can be written as a sum of positive squares in only one way, i.e., 16443025 + 1868689 = 4055^2 + 1367^2 .

It is not an unprimeable number, because it can be changed into a prime (18311719) 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, 4577927 + ... + 4577930.

Almost surely, 2^18311714 is an apocalyptic number.

18311714 is a deficient number, since it is larger than the sum of its proper divisors (9155860).

18311714 is an equidigital number, since it uses as much as digits as its factorization.

18311714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9155859.

The product of its digits is 672, while the sum is 26.

The square root of 18311714 is about 4279.2188539499. The cubic root of 18311714 is about 263.5783078808.

The spelling of 18311714 in words is "eighteen million, three hundred eleven thousand, seven hundred fourteen".