188966868 has 24 divisors (see below), whose sum is σ = 451678080. Its totient is φ = 61452480.

The previous prime is 188966863. The next prime is 188966903. The reversal of 188966868 is 868669881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188966863) 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, 191548 + ... + 192531.

It is an arithmetic number, because the mean of its divisors is an integer number (18819920).

Almost surely, 2^188966868 is an apocalyptic number.

It is an amenable number.

188966868 is an abundant number, since it is smaller than the sum of its proper divisors (262711212).

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

188966868 is a wasteful number, since it uses less digits than its factorization.

188966868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384127 (or 384125 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 60.

The square root of 188966868 is about 13746.5220328634. The cubic root of 188966868 is about 573.8458188847.

The spelling of 188966868 in words is "one hundred eighty-eight million, nine hundred sixty-six thousand, eight hundred sixty-eight".