91186045 has 16 divisors (see below), whose sum is σ = 116328960. Its totient is φ = 68379904.

The previous prime is 91186037. The next prime is 91186057. The reversal of 91186045 is 54068119.

It is a cyclic number.

It is not a de Polignac number, because 91186045 - 2³ = 91186037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91186045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20316 + ... + 24394.

It is an arithmetic number, because the mean of its divisors is an integer number (7270560).

Almost surely, 2^91186045 is an apocalyptic number.

It is an amenable number.

91186045 is a deficient number, since it is larger than the sum of its proper divisors (25142915).

91186045 is a wasteful number, since it uses less digits than its factorization.

91186045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 91186045 is about 9549.1384428125. The cubic root of 91186045 is about 450.1004631665.

The spelling of 91186045 in words is "ninety-one million, one hundred eighty-six thousand, forty-five".