91142164 has 24 divisors (see below), whose sum is σ = 168287840. Its totient is φ = 43071264.

The previous prime is 91142159. The next prime is 91142167. The reversal of 91142164 is 46124119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91142167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38602 + ... + 40894.

Almost surely, 2^91142164 is an apocalyptic number.

It is an amenable number.

91142164 is a deficient number, since it is larger than the sum of its proper divisors (77145676).

91142164 is a wasteful number, since it uses less digits than its factorization.

91142164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839 (or 2837 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 91142164 is about 9546.8405244877. The cubic root of 91142164 is about 450.0282517242.

The spelling of 91142164 in words is "ninety-one million, one hundred forty-two thousand, one hundred sixty-four".