194936912867 has 2 divisors, whose sum is σ = 194936912868. Its totient is φ = 194936912866.

The previous prime is 194936912857. The next prime is 194936912879. The reversal of 194936912867 is 768219639491.

It is a weak prime.

It is an emirp because it is prime and its reverse (768219639491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194936912867 - 2¹⁸ = 194936650723 is a prime.

It is not a weakly prime, because it can be changed into another prime (194936912857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97468456433 + 97468456434.

It is an arithmetic number, because the mean of its divisors is an integer number (97468456434).

Almost surely, 2^194936912867 is an apocalyptic number.

194936912867 is a deficient number, since it is larger than the sum of its proper divisors (1).

194936912867 is an equidigital number, since it uses as much as digits as its factorization.

194936912867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 65.

The spelling of 194936912867 in words is "one hundred ninety-four billion, nine hundred thirty-six million, nine hundred twelve thousand, eight hundred sixty-seven".