91840810948 has 48 divisors (see below), whose sum is σ = 180979202880. Its totient is φ = 40522346496.

The previous prime is 91840810933. The next prime is 91840810949. The reversal of 91840810948 is 84901804819.

It is a junction number, because it is equal to n+sod(n) for n = 91840810895 and 91840810904.

It is not an unprimeable number, because it can be changed into a prime (91840810949) 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 15 ways as a sum of consecutive naturals, for example, 241090 + ... + 491737.

It is an arithmetic number, because the mean of its divisors is an integer number (3770400060).

Almost surely, 2^91840810948 is an apocalyptic number.

It is an amenable number.

91840810948 is a deficient number, since it is larger than the sum of its proper divisors (89138391932).

91840810948 is a wasteful number, since it uses less digits than its factorization.

91840810948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732964 (or 732962 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 52.

The spelling of 91840810948 in words is "ninety-one billion, eight hundred forty million, eight hundred ten thousand, nine hundred forty-eight".