91838292079 has 2 divisors, whose sum is σ = 91838292080. Its totient is φ = 91838292078.

The previous prime is 91838292001. The next prime is 91838292097. The reversal of 91838292079 is 97029283819.

Together with next prime (91838292097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91838292079 - 2¹⁵ = 91838259311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91838292179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45919146039 + 45919146040.

It is an arithmetic number, because the mean of its divisors is an integer number (45919146040).

Almost surely, 2^91838292079 is an apocalyptic number.

91838292079 is a deficient number, since it is larger than the sum of its proper divisors (1).

91838292079 is an equidigital number, since it uses as much as digits as its factorization.

91838292079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 91838292079 in words is "ninety-one billion, eight hundred thirty-eight million, two hundred ninety-two thousand, seventy-nine".