196168416989 has 2 divisors, whose sum is σ = 196168416990. Its totient is φ = 196168416988.

The previous prime is 196168416943. The next prime is 196168417009. The reversal of 196168416989 is 989614861691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170016028900 + 26152388089 = 412330^2 + 161717^2 .

It is a cyclic number.

It is not a de Polignac number, because 196168416989 - 2³² = 191873449693 is a prime.

It is a super-2 number, since 2×196168416989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196168416289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98084208494 + 98084208495.

It is an arithmetic number, because the mean of its divisors is an integer number (98084208495).

Almost surely, 2^196168416989 is an apocalyptic number.

It is an amenable number.

196168416989 is a deficient number, since it is larger than the sum of its proper divisors (1).

196168416989 is an equidigital number, since it uses as much as digits as its factorization.

196168416989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40310784, while the sum is 68.

The spelling of 196168416989 in words is "one hundred ninety-six billion, one hundred sixty-eight million, four hundred sixteen thousand, nine hundred eighty-nine".