91394546519 has 2 divisors, whose sum is σ = 91394546520. Its totient is φ = 91394546518.

The previous prime is 91394546501. The next prime is 91394546533. The reversal of 91394546519 is 91564549319.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91394546519 - 2²⁴ = 91377769303 is a prime.

It is a super-2 number, since 2×91394546519² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91394546599) 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, 45697273259 + 45697273260.

It is an arithmetic number, because the mean of its divisors is an integer number (45697273260).

Almost surely, 2^91394546519 is an apocalyptic number.

91394546519 is a deficient number, since it is larger than the sum of its proper divisors (1).

91394546519 is an equidigital number, since it uses as much as digits as its factorization.

91394546519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5248800, while the sum is 56.

The spelling of 91394546519 in words is "ninety-one billion, three hundred ninety-four million, five hundred forty-six thousand, five hundred nineteen".