194936912879 has 2 divisors, whose sum is σ = 194936912880. Its totient is φ = 194936912878.

The previous prime is 194936912867. The next prime is 194936912959. The reversal of 194936912879 is 978219639491.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194936912879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194936912839) 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, 97468456439 + 97468456440.

It is an arithmetic number, because the mean of its divisors is an integer number (97468456440).

Almost surely, 2^194936912879 is an apocalyptic number.

194936912879 is a deficient number, since it is larger than the sum of its proper divisors (1).

194936912879 is an equidigital number, since it uses as much as digits as its factorization.

194936912879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52907904, while the sum is 68.

The spelling of 194936912879 in words is "one hundred ninety-four billion, nine hundred thirty-six million, nine hundred twelve thousand, eight hundred seventy-nine".