195343994539 has 2 divisors, whose sum is σ = 195343994540. Its totient is φ = 195343994538.

The previous prime is 195343994513. The next prime is 195343994567. The reversal of 195343994539 is 935499343591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 195343994539 - 2⁷ = 195343994411 is a prime.

It is not a weakly prime, because it can be changed into another prime (195343994579) 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, 97671997269 + 97671997270.

It is an arithmetic number, because the mean of its divisors is an integer number (97671997270).

Almost surely, 2^195343994539 is an apocalyptic number.

195343994539 is a deficient number, since it is larger than the sum of its proper divisors (1).

195343994539 is an equidigital number, since it uses as much as digits as its factorization.

195343994539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70858800, while the sum is 64.

The spelling of 195343994539 in words is "one hundred ninety-five billion, three hundred forty-three million, nine hundred ninety-four thousand, five hundred thirty-nine".