195865297 has 2 divisors, whose sum is σ = 195865298. Its totient is φ = 195865296.

The previous prime is 195865291. The next prime is 195865339. The reversal of 195865297 is 792568591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108180801 + 87684496 = 10401^2 + 9364^2 .

It is an emirp because it is prime and its reverse (792568591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195865297 - 2¹⁵ = 195832529 is a prime.

It is not a weakly prime, because it can be changed into another prime (195865291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97932648 + 97932649.

It is an arithmetic number, because the mean of its divisors is an integer number (97932649).

Almost surely, 2^195865297 is an apocalyptic number.

It is an amenable number.

195865297 is a deficient number, since it is larger than the sum of its proper divisors (1).

195865297 is an equidigital number, since it uses as much as digits as its factorization.

195865297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 52.

The square root of 195865297 is about 13995.1883517157. The cubic root of 195865297 is about 580.7454712842.

The spelling of 195865297 in words is "one hundred ninety-five million, eight hundred sixty-five thousand, two hundred ninety-seven".