195884291 has 2 divisors, whose sum is σ = 195884292. Its totient is φ = 195884290.

The previous prime is 195884263. The next prime is 195884303. The reversal of 195884291 is 192488591.

It is a strong prime.

It is an emirp because it is prime and its reverse (192488591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195884291 - 2¹⁰ = 195883267 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (195884791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97942145 + 97942146.

It is an arithmetic number, because the mean of its divisors is an integer number (97942146).

Almost surely, 2^195884291 is an apocalyptic number.

195884291 is a deficient number, since it is larger than the sum of its proper divisors (1).

195884291 is an equidigital number, since it uses as much as digits as its factorization.

195884291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 47.

The square root of 195884291 is about 13995.8669256320. The cubic root of 195884291 is about 580.7642432380.

The spelling of 195884291 in words is "one hundred ninety-five million, eight hundred eighty-four thousand, two hundred ninety-one".