195676784197 has 2 divisors, whose sum is σ = 195676784198. Its totient is φ = 195676784196.

The previous prime is 195676784167. The next prime is 195676784209. The reversal of 195676784197 is 791487676591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178556108481 + 17120675716 = 422559^2 + 130846^2 .

It is a cyclic number.

It is not a de Polignac number, because 195676784197 - 2¹¹ = 195676782149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195676784167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97838392098 + 97838392099.

It is an arithmetic number, because the mean of its divisors is an integer number (97838392099).

Almost surely, 2^195676784197 is an apocalyptic number.

It is an amenable number.

195676784197 is a deficient number, since it is larger than the sum of its proper divisors (1).

195676784197 is an equidigital number, since it uses as much as digits as its factorization.

195676784197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160030080, while the sum is 70.

The spelling of 195676784197 in words is "one hundred ninety-five billion, six hundred seventy-six million, seven hundred eighty-four thousand, one hundred ninety-seven".