188905194168 has 64 divisors (see below), whose sum is σ = 480646396800. Its totient is φ = 61852295040.

The previous prime is 188905194161. The next prime is 188905194187. The reversal of 188905194168 is 861491509881.

188905194168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188905194161) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1764738 + ... + 1868718.

It is an arithmetic number, because the mean of its divisors is an integer number (7510099950).

Almost surely, 2^188905194168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188905194168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240323198400).

188905194168 is an abundant number, since it is smaller than the sum of its proper divisors (291741202632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

188905194168 is a wasteful number, since it uses less digits than its factorization.

188905194168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105332 (or 105328 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 60.

The spelling of 188905194168 in words is "one hundred eighty-eight billion, nine hundred five million, one hundred ninety-four thousand, one hundred sixty-eight".