91188888319 has 2 divisors, whose sum is σ = 91188888320. Its totient is φ = 91188888318.

The previous prime is 91188888257. The next prime is 91188888341. The reversal of 91188888319 is 91388888119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91188888319 - 2⁹ = 91188887807 is a prime.

It is a super-2 number, since 2×91188888319² (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 (91188880319) 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, 45594444159 + 45594444160.

It is an arithmetic number, because the mean of its divisors is an integer number (45594444160).

Almost surely, 2^91188888319 is an apocalyptic number.

91188888319 is a deficient number, since it is larger than the sum of its proper divisors (1).

91188888319 is an equidigital number, since it uses as much as digits as its factorization.

91188888319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7962624, while the sum is 64.

The spelling of 91188888319 in words is "ninety-one billion, one hundred eighty-eight million, eight hundred eighty-eight thousand, three hundred nineteen".