18326941894 has 16 divisors (see below), whose sum is σ = 28380502656. Its totient is φ = 8866843200.

The previous prime is 18326941859. The next prime is 18326941901. The reversal of 18326941894 is 49814962381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1029114 + ... + 1046770.

It is an arithmetic number, because the mean of its divisors is an integer number (1773781416).

Almost surely, 2^18326941894 is an apocalyptic number.

18326941894 is a deficient number, since it is larger than the sum of its proper divisors (10053560762).

18326941894 is a wasteful number, since it uses less digits than its factorization.

18326941894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34431.

The product of its digits is 2985984, while the sum is 55.

The spelling of 18326941894 in words is "eighteen billion, three hundred twenty-six million, nine hundred forty-one thousand, eight hundred ninety-four".