91828355838 has 16 divisors (see below), whose sum is σ = 183666871056. Its totient is φ = 30607758720.

The previous prime is 91828355819. The next prime is 91828355869. The reversal of 91828355838 is 83855382819.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 303181 + ... + 524952.

It is an arithmetic number, because the mean of its divisors is an integer number (11479179441).

Almost surely, 2^91828355838 is an apocalyptic number.

91828355838 is an abundant number, since it is smaller than the sum of its proper divisors (91838515218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91828355838 is a wasteful number, since it uses less digits than its factorization.

91828355838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846619.

The product of its digits is 16588800, while the sum is 60.

The spelling of 91828355838 in words is "ninety-one billion, eight hundred twenty-eight million, three hundred fifty-five thousand, eight hundred thirty-eight".