91038163 has 16 divisors (see below), whose sum is σ = 100699200. Its totient is φ = 82001920.

The previous prime is 91038161. The next prime is 91038173. The reversal of 91038163 is 36183019.

It is a cyclic number.

It is not a de Polignac number, because 91038163 - 2¹ = 91038161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91038161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25683 + ... + 29011.

It is an arithmetic number, because the mean of its divisors is an integer number (6293700).

Almost surely, 2^91038163 is an apocalyptic number.

91038163 is a deficient number, since it is larger than the sum of its proper divisors (9661037).

91038163 is a wasteful number, since it uses less digits than its factorization.

91038163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 91038163 is about 9541.3920892079. The cubic root of 91038163 is about 449.8570130071.

The spelling of 91038163 in words is "ninety-one million, thirty-eight thousand, one hundred sixty-three".