91839794794 has 8 divisors (see below), whose sum is σ = 150283300608. Its totient is φ = 41745361260.

The previous prime is 91839794777. The next prime is 91839794939. The reversal of 91839794794 is 49749793819.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087268042 + ... + 2087268085.

It is an arithmetic number, because the mean of its divisors is an integer number (18785412576).

Almost surely, 2^91839794794 is an apocalyptic number.

91839794794 is a deficient number, since it is larger than the sum of its proper divisors (58443505814).

91839794794 is a wasteful number, since it uses less digits than its factorization.

91839794794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174536140.

The product of its digits is 123451776, while the sum is 70.

The spelling of 91839794794 in words is "ninety-one billion, eight hundred thirty-nine million, seven hundred ninety-four thousand, seven hundred ninety-four".