188999814 has 16 divisors (see below), whose sum is σ = 379624752. Its totient is φ = 62729088.

The previous prime is 188999807. The next prime is 188999849. The reversal of 188999814 is 418999881.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 66199 + ... + 68994.

It is an arithmetic number, because the mean of its divisors is an integer number (23726547).

Almost surely, 2^188999814 is an apocalyptic number.

188999814 is an abundant number, since it is smaller than the sum of its proper divisors (190624938).

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

188999814 is a wasteful number, since it uses less digits than its factorization.

188999814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135431.

The product of its digits is 1492992, while the sum is 57.

The square root of 188999814 is about 13747.7203201113. The cubic root of 188999814 is about 573.8791665749.

The spelling of 188999814 in words is "one hundred eighty-eight million, nine hundred ninety-nine thousand, eight hundred fourteen".