189210188 has 12 divisors (see below), whose sum is σ = 333725952. Its totient is φ = 93859920.

The previous prime is 189210163. The next prime is 189210199. The reversal of 189210188 is 881012981.

It is a happy number.

189210188 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 185723 + ... + 186738.

It is an arithmetic number, because the mean of its divisors is an integer number (27810496).

Almost surely, 2^189210188 is an apocalyptic number.

It is an amenable number.

189210188 is a deficient number, since it is larger than the sum of its proper divisors (144515764).

189210188 is a wasteful number, since it uses less digits than its factorization.

189210188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372592 (or 372590 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 38.

The square root of 189210188 is about 13755.3694243375. The cubic root of 189210188 is about 574.0920142081.

The spelling of 189210188 in words is "one hundred eighty-nine million, two hundred ten thousand, one hundred eighty-eight".