91834578089 has 8 divisors (see below), whose sum is σ = 95843424960. Its totient is φ = 87827067856.

The previous prime is 91834578083. The next prime is 91834578097. The reversal of 91834578089 is 98087543819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91834578089 - 2⁸ = 91834577833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91834578083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192467 + ... + 469800.

It is an arithmetic number, because the mean of its divisors is an integer number (11980428120).

Almost surely, 2^91834578089 is an apocalyptic number.

It is an amenable number.

91834578089 is a deficient number, since it is larger than the sum of its proper divisors (4008846871).

91834578089 is a wasteful number, since it uses less digits than its factorization.

91834578089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668319.

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 91834578089 in words is "ninety-one billion, eight hundred thirty-four million, five hundred seventy-eight thousand, eighty-nine".