18041643164 has 12 divisors (see below), whose sum is σ = 32945609424. Its totient is φ = 8628611904.

The previous prime is 18041643163. The next prime is 18041643197. The reversal of 18041643164 is 46134614081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18041643163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98052317 + ... + 98052500.

It is an arithmetic number, because the mean of its divisors is an integer number (2745467452).

Almost surely, 2^18041643164 is an apocalyptic number.

It is an amenable number.

18041643164 is a deficient number, since it is larger than the sum of its proper divisors (14903966260).

18041643164 is a wasteful number, since it uses less digits than its factorization.

18041643164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196104844 (or 196104842 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 18041643164 in words is "eighteen billion, forty-one million, six hundred forty-three thousand, one hundred sixty-four".