191490696343 has 2 divisors, whose sum is σ = 191490696344. Its totient is φ = 191490696342.

The previous prime is 191490696317. The next prime is 191490696361. The reversal of 191490696343 is 343696094191.

It is a happy number.

191490696343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191490696343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191490696643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95745348171 + 95745348172.

It is an arithmetic number, because the mean of its divisors is an integer number (95745348172).

Almost surely, 2^191490696343 is an apocalyptic number.

191490696343 is a deficient number, since it is larger than the sum of its proper divisors (1).

191490696343 is an equidigital number, since it uses as much as digits as its factorization.

191490696343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 55.

The spelling of 191490696343 in words is "one hundred ninety-one billion, four hundred ninety million, six hundred ninety-six thousand, three hundred forty-three".