189173634 has 32 divisors (see below), whose sum is σ = 408295104. Its totient is φ = 58086720.

The previous prime is 189173623. The next prime is 189173653. The reversal of 189173634 is 436371981.

189173634 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 39957 + ... + 44439.

It is an arithmetic number, because the mean of its divisors is an integer number (12759222).

Almost surely, 2^189173634 is an apocalyptic number.

189173634 is an abundant number, since it is smaller than the sum of its proper divisors (219121470).

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

189173634 is a wasteful number, since it uses less digits than its factorization.

189173634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042.

The product of its digits is 108864, while the sum is 42.

The square root of 189173634 is about 13754.0406426621. The cubic root of 189173634 is about 574.0550417257.

The spelling of 189173634 in words is "one hundred eighty-nine million, one hundred seventy-three thousand, six hundred thirty-four".