91190082163 has 4 divisors (see below), whose sum is σ = 95154868368. Its totient is φ = 87225295960.

The previous prime is 91190082157. The next prime is 91190082169. The reversal of 91190082163 is 36128009119.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (91190082157) and next prime (91190082169).

It is a cyclic number.

It is not a de Polignac number, because 91190082163 - 2⁵ = 91190082131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91190082169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982393068 + ... + 1982393113.

It is an arithmetic number, because the mean of its divisors is an integer number (23788717092).

Almost surely, 2^91190082163 is an apocalyptic number.

91190082163 is a deficient number, since it is larger than the sum of its proper divisors (3964786205).

91190082163 is a wasteful number, since it uses less digits than its factorization.

91190082163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964786204.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 91190082163 in words is "ninety-one billion, one hundred ninety million, eighty-two thousand, one hundred sixty-three".