91938304379 has 2 divisors, whose sum is σ = 91938304380. Its totient is φ = 91938304378.

The previous prime is 91938304361. The next prime is 91938304421. The reversal of 91938304379 is 97340383919.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91938304379 - 2²⁸ = 91669868923 is a prime.

It is not a weakly prime, because it can be changed into another prime (91938304309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45969152189 + 45969152190.

It is an arithmetic number, because the mean of its divisors is an integer number (45969152190).

Almost surely, 2^91938304379 is an apocalyptic number.

91938304379 is a deficient number, since it is larger than the sum of its proper divisors (1).

91938304379 is an equidigital number, since it uses as much as digits as its factorization.

91938304379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 91938304379 in words is "ninety-one billion, nine hundred thirty-eight million, three hundred four thousand, three hundred seventy-nine".