189841928 has 8 divisors (see below), whose sum is σ = 355953630. Its totient is φ = 94920960.

The previous prime is 189841909. The next prime is 189841937. The reversal of 189841928 is 829148981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 97259044 + 92582884 = 9862^2 + 9622^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11865113 + ... + 11865128.

Almost surely, 2^189841928 is an apocalyptic number.

It is an amenable number.

189841928 is a deficient number, since it is larger than the sum of its proper divisors (166111702).

189841928 is a wasteful number, since it uses less digits than its factorization.

189841928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23730247 (or 23730243 counting only the distinct ones).

The product of its digits is 331776, while the sum is 50.

The square root of 189841928 is about 13778.3136849180. The cubic root of 189841928 is about 574.7302356512.

The spelling of 189841928 in words is "one hundred eighty-nine million, eight hundred forty-one thousand, nine hundred twenty-eight".