18422601664 has 28 divisors (see below), whose sum is σ = 36562968784. Its totient is φ = 9209885184.

The previous prime is 18422601641. The next prime is 18422601677. The reversal of 18422601664 is 46610622481.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 489172 + ... + 525484.

Almost surely, 2^18422601664 is an apocalyptic number.

It is an amenable number.

18422601664 is a deficient number, since it is larger than the sum of its proper divisors (18140367120).

18422601664 is an equidigital number, since it uses as much as digits as its factorization.

18422601664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44252 (or 44242 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 18422601664 in words is "eighteen billion, four hundred twenty-two million, six hundred one thousand, six hundred sixty-four".