189853908 has 24 divisors (see below), whose sum is σ = 443391648. Its totient is φ = 63227616.

The previous prime is 189853883. The next prime is 189853921. The reversal of 189853908 is 809358981.

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, 8035 + ... + 21077.

It is an arithmetic number, because the mean of its divisors is an integer number (18474652).

Almost surely, 2^189853908 is an apocalyptic number.

It is an amenable number.

189853908 is an abundant number, since it is smaller than the sum of its proper divisors (253537740).

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

189853908 is a wasteful number, since it uses less digits than its factorization.

189853908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263 (or 14261 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 189853908 is about 13778.7484192143. The cubic root of 189853908 is about 574.7423248728.

The spelling of 189853908 in words is "one hundred eighty-nine million, eight hundred fifty-three thousand, nine hundred eight".