195253189 has 2 divisors, whose sum is σ = 195253190. Its totient is φ = 195253188.

The previous prime is 195253183. The next prime is 195253199. The reversal of 195253189 is 981352591.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117548964 + 77704225 = 10842^2 + 8815^2 .

It is a cyclic number.

It is not a de Polignac number, because 195253189 - 2⁹ = 195252677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195253183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97626594 + 97626595.

It is an arithmetic number, because the mean of its divisors is an integer number (97626595).

Almost surely, 2^195253189 is an apocalyptic number.

It is an amenable number.

195253189 is a deficient number, since it is larger than the sum of its proper divisors (1).

195253189 is an equidigital number, since it uses as much as digits as its factorization.

195253189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97200, while the sum is 43.

The square root of 195253189 is about 13973.3027234079. The cubic root of 195253189 is about 580.1398681703.

The spelling of 195253189 in words is "one hundred ninety-five million, two hundred fifty-three thousand, one hundred eighty-nine".