191868659083 has 2 divisors, whose sum is σ = 191868659084. Its totient is φ = 191868659082.

The previous prime is 191868659051. The next prime is 191868659117. The reversal of 191868659083 is 380956868191.

It is a weak prime.

It is an emirp because it is prime and its reverse (380956868191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191868659083 - 2⁵ = 191868659051 is a prime.

It is not a weakly prime, because it can be changed into another prime (191868659183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95934329541 + 95934329542.

It is an arithmetic number, because the mean of its divisors is an integer number (95934329542).

Almost surely, 2^191868659083 is an apocalyptic number.

191868659083 is a deficient number, since it is larger than the sum of its proper divisors (1).

191868659083 is an equidigital number, since it uses as much as digits as its factorization.

191868659083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22394880, while the sum is 64.

The spelling of 191868659083 in words is "one hundred ninety-one billion, eight hundred sixty-eight million, six hundred fifty-nine thousand, eighty-three".