195256189 has 8 divisors (see below), whose sum is σ = 199749888. Its totient is φ = 190776720.

The previous prime is 195256183. The next prime is 195256199. The reversal of 195256189 is 981652591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195256189 - 2⁹ = 195255677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195256183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27199 + ... + 33619.

It is an arithmetic number, because the mean of its divisors is an integer number (24968736).

Almost surely, 2^195256189 is an apocalyptic number.

It is an amenable number.

195256189 is a deficient number, since it is larger than the sum of its proper divisors (4493699).

195256189 is an equidigital number, since it uses as much as digits as its factorization.

195256189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115.

The product of its digits is 194400, while the sum is 46.

The square root of 195256189 is about 13973.4100705590. The cubic root of 195256189 is about 580.1428393735.

The spelling of 195256189 in words is "one hundred ninety-five million, two hundred fifty-six thousand, one hundred eighty-nine".