18357190172 has 24 divisors (see below), whose sum is σ = 34026876576. Its totient is φ = 8635609088.

The previous prime is 18357190127. The next prime is 18357190177. The reversal of 18357190172 is 27109175381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18357190177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150908 + ... + 243900.

It is an arithmetic number, because the mean of its divisors is an integer number (1417786524).

Almost surely, 2^18357190172 is an apocalyptic number.

It is an amenable number.

18357190172 is a deficient number, since it is larger than the sum of its proper divisors (15669686404).

18357190172 is a wasteful number, since it uses less digits than its factorization.

18357190172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95917 (or 95915 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 44.

The spelling of 18357190172 in words is "eighteen billion, three hundred fifty-seven million, one hundred ninety thousand, one hundred seventy-two".