18499164 has 12 divisors (see below), whose sum is σ = 43164744. Its totient is φ = 6166384.

The previous prime is 18499139. The next prime is 18499181. The reversal of 18499164 is 46199481.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 770787 + ... + 770810.

It is an arithmetic number, because the mean of its divisors is an integer number (3597062).

Almost surely, 2^18499164 is an apocalyptic number.

It is an amenable number.

18499164 is an abundant number, since it is smaller than the sum of its proper divisors (24665580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18499164 is a wasteful number, since it uses less digits than its factorization.

18499164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541604 (or 1541602 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 18499164 is about 4301.0654493974. The cubic root of 18499164 is about 264.4746397165.

The spelling of 18499164 in words is "eighteen million, four hundred ninety-nine thousand, one hundred sixty-four".