189322985 has 16 divisors (see below), whose sum is σ = 230564880. Its totient is φ = 149222400.

The previous prime is 189322979. The next prime is 189322993. The reversal of 189322985 is 589223981.

It can be written as a sum of positive squares in 8 ways, for example, as 26173456 + 163149529 = 5116^2 + 12773^2 .

It is not a de Polignac number, because 189322985 - 2¹⁰ = 189321961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116861 + ... + 118469.

It is an arithmetic number, because the mean of its divisors is an integer number (14410305).

Almost surely, 2^189322985 is an apocalyptic number.

It is an amenable number.

189322985 is a deficient number, since it is larger than the sum of its proper divisors (41241895).

189322985 is a wasteful number, since it uses less digits than its factorization.

189322985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948.

The product of its digits is 311040, while the sum is 47.

The square root of 189322985 is about 13759.4689214373. The cubic root of 189322985 is about 574.2060725364.

The spelling of 189322985 in words is "one hundred eighty-nine million, three hundred twenty-two thousand, nine hundred eighty-five".