18043325894 has 16 divisors (see below), whose sum is σ = 29533343040. Its totient is φ = 8199317160.

The previous prime is 18043325873. The next prime is 18043325917. The reversal of 18043325894 is 49852334081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24164 + ... + 191495.

It is an arithmetic number, because the mean of its divisors is an integer number (1845833940).

Almost surely, 2^18043325894 is an apocalyptic number.

18043325894 is a deficient number, since it is larger than the sum of its proper divisors (11490017146).

18043325894 is a wasteful number, since it uses less digits than its factorization.

18043325894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219475.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 18043325894 in words is "eighteen billion, forty-three million, three hundred twenty-five thousand, eight hundred ninety-four".