189878096 has 20 divisors (see below), whose sum is σ = 387252000. Its totient is φ = 89942112.

The previous prime is 189878089. The next prime is 189878111. The reversal of 189878096 is 690878981.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 311996 + ... + 312603.

It is an arithmetic number, because the mean of its divisors is an integer number (19362600).

Almost surely, 2^189878096 is an apocalyptic number.

189878096 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189878096 is an abundant number, since it is smaller than the sum of its proper divisors (197373904).

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

189878096 is a wasteful number, since it uses less digits than its factorization.

189878096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624626 (or 624620 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 56.

The square root of 189878096 is about 13779.6261197465. The cubic root of 189878096 is about 574.7667318447.

The spelling of 189878096 in words is "one hundred eighty-nine million, eight hundred seventy-eight thousand, ninety-six".