188225826 has 16 divisors (see below), whose sum is σ = 378142464. Its totient is φ = 62460144.

The previous prime is 188225803. The next prime is 188225857. The reversal of 188225826 is 628522881.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69001 + ... + 71676.

It is an arithmetic number, because the mean of its divisors is an integer number (23633904).

Almost surely, 2^188225826 is an apocalyptic number.

188225826 is an abundant number, since it is smaller than the sum of its proper divisors (189916638).

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

188225826 is a wasteful number, since it uses less digits than its factorization.

188225826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140905.

The product of its digits is 122880, while the sum is 42.

The square root of 188225826 is about 13719.5417561958. The cubic root of 188225826 is about 573.0947155424.

The spelling of 188225826 in words is "one hundred eighty-eight million, two hundred twenty-five thousand, eight hundred twenty-six".