188225886 has 8 divisors (see below), whose sum is σ = 376451784. Its totient is φ = 62741960.

The previous prime is 188225857. The next prime is 188225897. The reversal of 188225886 is 688522881.

It is a happy number.

188225886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

188225886 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15685485 + ... + 15685496.

It is an arithmetic number, because the mean of its divisors is an integer number (47056473).

Almost surely, 2^188225886 is an apocalyptic number.

188225886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

188225886 is a wasteful number, since it uses less digits than its factorization.

188225886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31370986.

The product of its digits is 491520, while the sum is 48.

The square root of 188225886 is about 13719.5439428576. The cubic root of 188225886 is about 573.0947764368.

The spelling of 188225886 in words is "one hundred eighty-eight million, two hundred twenty-five thousand, eight hundred eighty-six".