91881853922 has 32 divisors (see below), whose sum is σ = 146369203200. Its totient is φ = 43164257488.

The previous prime is 91881853919. The next prime is 91881853927. The reversal of 91881853922 is 22935818819.

It is not an unprimeable number, because it can be changed into a prime (91881853927) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3566933 + ... + 3592599.

It is an arithmetic number, because the mean of its divisors is an integer number (4574037600).

Almost surely, 2^91881853922 is an apocalyptic number.

91881853922 is a deficient number, since it is larger than the sum of its proper divisors (54487349278).

91881853922 is a wasteful number, since it uses less digits than its factorization.

91881853922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27070.

The product of its digits is 2488320, while the sum is 56.

The spelling of 91881853922 in words is "ninety-one billion, eight hundred eighty-one million, eight hundred fifty-three thousand, nine hundred twenty-two".