196268278709 has 2 divisors, whose sum is σ = 196268278710. Its totient is φ = 196268278708.

The previous prime is 196268278673. The next prime is 196268278727. The reversal of 196268278709 is 907872862691.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191753782609 + 4514496100 = 437897^2 + 67190^2 .

It is a cyclic number.

It is not a de Polignac number, because 196268278709 - 2²⁸ = 195999843253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196268278009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98134139354 + 98134139355.

It is an arithmetic number, because the mean of its divisors is an integer number (98134139355).

Almost surely, 2^196268278709 is an apocalyptic number.

It is an amenable number.

196268278709 is a deficient number, since it is larger than the sum of its proper divisors (1).

196268278709 is an equidigital number, since it uses as much as digits as its factorization.

196268278709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 196268278709 in words is "one hundred ninety-six billion, two hundred sixty-eight million, two hundred seventy-eight thousand, seven hundred nine".