189328185 has 20 divisors (see below), whose sum is σ = 339389028. Its totient is φ = 100974816.

The previous prime is 189328169. The next prime is 189328193. The reversal of 189328185 is 581823981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62157456 + 127170729 = 7884^2 + 11277^2 .

It is not a de Polignac number, because 189328185 - 2⁴ = 189328169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 189328185.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 233334 + ... + 234143.

Almost surely, 2^189328185 is an apocalyptic number.

189328185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189328185 is a deficient number, since it is larger than the sum of its proper divisors (150060843).

189328185 is an equidigital number, since it uses as much as digits as its factorization.

189328185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467494 (or 467485 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 189328185 is about 13759.6578809213. The cubic root of 189328185 is about 574.2113295917.

The spelling of 189328185 in words is "one hundred eighty-nine million, three hundred twenty-eight thousand, one hundred eighty-five".