18312746 has 16 divisors (see below), whose sum is σ = 28823040. Its totient is φ = 8714160.

The previous prime is 18312737. The next prime is 18312769. The reversal of 18312746 is 64721381.

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 7 ways as a sum of consecutive naturals, for example, 1895 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (1801440).

Almost surely, 2^18312746 is an apocalyptic number.

18312746 is a deficient number, since it is larger than the sum of its proper divisors (10510294).

18312746 is a wasteful number, since it uses less digits than its factorization.

18312746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549.

The product of its digits is 8064, while the sum is 32.

The square root of 18312746 is about 4279.3394350063. The cubic root of 18312746 is about 263.5832593144.

The spelling of 18312746 in words is "eighteen million, three hundred twelve thousand, seven hundred forty-six".