18166244934 has 16 divisors (see below), whose sum is σ = 36928105200. Its totient is φ = 5956145760.

The previous prime is 18166244891. The next prime is 18166244969. The reversal of 18166244934 is 43944266181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24816909 + ... + 24817640.

It is an arithmetic number, because the mean of its divisors is an integer number (2308006575).

Almost surely, 2^18166244934 is an apocalyptic number.

18166244934 is an abundant number, since it is smaller than the sum of its proper divisors (18761860266).

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

18166244934 is a wasteful number, since it uses less digits than its factorization.

18166244934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49634615.

The product of its digits is 995328, while the sum is 48.

The spelling of 18166244934 in words is "eighteen billion, one hundred sixty-six million, two hundred forty-four thousand, nine hundred thirty-four".