91234454193 has 16 divisors (see below), whose sum is σ = 135195054400. Its totient is φ = 60808164480.

The previous prime is 91234454159. The next prime is 91234454197. The reversal of 91234454193 is 39145443219.

91234454193 is a `hidden beast` number, since 9 + 1 + 2 + 3 + 4 + 454 + 193 = 666.

It is not a de Polignac number, because 91234454193 - 2¹⁰ = 91234453169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91234454197) 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 in 15 ways as a sum of consecutive naturals, for example, 297703 + ... + 520668.

It is an arithmetic number, because the mean of its divisors is an integer number (8449690900).

Almost surely, 2^91234454193 is an apocalyptic number.

It is an amenable number.

91234454193 is a deficient number, since it is larger than the sum of its proper divisors (43960600207).

91234454193 is a wasteful number, since it uses less digits than its factorization.

91234454193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822509 (or 822503 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The spelling of 91234454193 in words is "ninety-one billion, two hundred thirty-four million, four hundred fifty-four thousand, one hundred ninety-three".