189975195 has 12 divisors (see below), whose sum is σ = 329290416. Its totient is φ = 101320080.

The previous prime is 189975173. The next prime is 189975199. The reversal of 189975195 is 591579981.

It is not a de Polignac number, because 189975195 - 2¹⁰ = 189974171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189975199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2110791 + ... + 2110880.

It is an arithmetic number, because the mean of its divisors is an integer number (27440868).

Almost surely, 2^189975195 is an apocalyptic number.

189975195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189975195 is a deficient number, since it is larger than the sum of its proper divisors (139315221).

189975195 is a wasteful number, since it uses less digits than its factorization.

189975195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4221682 (or 4221679 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 54.

The square root of 189975195 is about 13783.1489508022. The cubic root of 189975195 is about 574.8646890176.

The spelling of 189975195 in words is "one hundred eighty-nine million, nine hundred seventy-five thousand, one hundred ninety-five".