191341854719 has 2 divisors, whose sum is σ = 191341854720. Its totient is φ = 191341854718.

The previous prime is 191341854701. The next prime is 191341854749. The reversal of 191341854719 is 917458143191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191341854719 - 2⁸ = 191341854463 is a prime.

It is a super-2 number, since 2×191341854719² (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 (191341854749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95670927359 + 95670927360.

It is an arithmetic number, because the mean of its divisors is an integer number (95670927360).

Almost surely, 2^191341854719 is an apocalyptic number.

191341854719 is a deficient number, since it is larger than the sum of its proper divisors (1).

191341854719 is an equidigital number, since it uses as much as digits as its factorization.

191341854719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 53.

The spelling of 191341854719 in words is "one hundred ninety-one billion, three hundred forty-one million, eight hundred fifty-four thousand, seven hundred nineteen".