188988192 has 72 divisors (see below), whose sum is σ = 541771776. Its totient is φ = 62487936.

The previous prime is 188988181. The next prime is 188988209. The reversal of 188988192 is 291889881.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

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 11 ways as a sum of consecutive naturals, for example, 33993 + ... + 39159.

It is an arithmetic number, because the mean of its divisors is an integer number (7524608).

Almost surely, 2^188988192 is an apocalyptic number.

188988192 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188988192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270885888).

188988192 is an abundant number, since it is smaller than the sum of its proper divisors (352783584).

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

188988192 is a wasteful number, since it uses less digits than its factorization.

188988192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5310 (or 5299 counting only the distinct ones).

The product of its digits is 663552, while the sum is 54.

The square root of 188988192 is about 13747.2976253517. The cubic root of 188988192 is about 573.8674033175.

The spelling of 188988192 in words is "one hundred eighty-eight million, nine hundred eighty-eight thousand, one hundred ninety-two".