18146944 has 16 divisors (see below), whose sum is σ = 36152370. Its totient is φ = 9073408.

The previous prime is 18146927. The next prime is 18146959. The reversal of 18146944 is 44964181.

It can be written as a sum of positive squares in only one way, i.e., 17640000 + 506944 = 4200^2 + 712^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70759 + ... + 71014.

Almost surely, 2^18146944 is an apocalyptic number.

It is an amenable number.

18146944 is a deficient number, since it is larger than the sum of its proper divisors (18005426).

18146944 is an equidigital number, since it uses as much as digits as its factorization.

18146944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141787 (or 141775 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 18146944 is about 4259.9230039990. The cubic root of 18146944 is about 262.7853598208.

The spelling of 18146944 in words is "eighteen million, one hundred forty-six thousand, nine hundred forty-four".