188232906 has 16 divisors (see below), whose sum is σ = 378360000. Its totient is φ = 62428608.

The previous prime is 188232901. The next prime is 188232911. The reversal of 188232906 is 609232881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (188232901) and next prime (188232911).

It is not an unprimeable number, because it can be changed into a prime (188232901) by changing a digit.

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, 77631 + ... + 80018.

It is an arithmetic number, because the mean of its divisors is an integer number (23647500).

Almost surely, 2^188232906 is an apocalyptic number.

188232906 is an abundant number, since it is smaller than the sum of its proper divisors (190127094).

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

188232906 is a wasteful number, since it uses less digits than its factorization.

188232906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157853.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 188232906 is about 13719.7997798802. The cubic root of 188232906 is about 573.1019009887.

The spelling of 188232906 in words is "one hundred eighty-eight million, two hundred thirty-two thousand, nine hundred six".