195986763169 has 2 divisors, whose sum is σ = 195986763170. Its totient is φ = 195986763168.

The previous prime is 195986763151. The next prime is 195986763179. The reversal of 195986763169 is 961367689591.

195986763169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189664605025 + 6322158144 = 435505^2 + 79512^2 .

It is a cyclic number.

It is not a de Polignac number, because 195986763169 - 2³¹ = 193839279521 is a prime.

It is a super-2 number, since 2×195986763169² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 195986763098 and 195986763107.

It is not a weakly prime, because it can be changed into another prime (195986763109) 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 as a sum of consecutive naturals, namely, 97993381584 + 97993381585.

It is an arithmetic number, because the mean of its divisors is an integer number (97993381585).

Almost surely, 2^195986763169 is an apocalyptic number.

It is an amenable number.

195986763169 is a deficient number, since it is larger than the sum of its proper divisors (1).

195986763169 is an equidigital number, since it uses as much as digits as its factorization.

195986763169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132269760, while the sum is 70.

The spelling of 195986763169 in words is "one hundred ninety-five billion, nine hundred eighty-six million, seven hundred sixty-three thousand, one hundred sixty-nine".