191422883879 has 2 divisors, whose sum is σ = 191422883880. Its totient is φ = 191422883878.

The previous prime is 191422883857. The next prime is 191422883887. The reversal of 191422883879 is 978388224191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191422883879 - 2⁸ = 191422883623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191422883279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95711441939 + 95711441940.

It is an arithmetic number, because the mean of its divisors is an integer number (95711441940).

Almost surely, 2^191422883879 is an apocalyptic number.

191422883879 is a deficient number, since it is larger than the sum of its proper divisors (1).

191422883879 is an equidigital number, since it uses as much as digits as its factorization.

191422883879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13934592, while the sum is 62.

The spelling of 191422883879 in words is "one hundred ninety-one billion, four hundred twenty-two million, eight hundred eighty-three thousand, eight hundred seventy-nine".