189529123 has 16 divisors (see below), whose sum is σ = 235872000. Its totient is φ = 148593312.

The previous prime is 189529121. The next prime is 189529127. The reversal of 189529123 is 321925981.

It is not a de Polignac number, because 189529123 - 2¹ = 189529121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189529121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20713 + ... + 28426.

It is an arithmetic number, because the mean of its divisors is an integer number (14742000).

Almost surely, 2^189529123 is an apocalyptic number.

189529123 is a deficient number, since it is larger than the sum of its proper divisors (46342877).

189529123 is a wasteful number, since it uses less digits than its factorization.

189529123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49194.

The product of its digits is 38880, while the sum is 40.

The square root of 189529123 is about 13766.9576522920. The cubic root of 189529123 is about 574.4143986373.

The spelling of 189529123 in words is "one hundred eighty-nine million, five hundred twenty-nine thousand, one hundred twenty-three".