91161692 has 12 divisors (see below), whose sum is σ = 159699960. Its totient is φ = 45533136.

The previous prime is 91161683. The next prime is 91161709. The reversal of 91161692 is 29616119.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7442 + ... + 15417.

It is an arithmetic number, because the mean of its divisors is an integer number (13308330).

Almost surely, 2^91161692 is an apocalyptic number.

It is an amenable number.

91161692 is a deficient number, since it is larger than the sum of its proper divisors (68538268).

91161692 is a wasteful number, since it uses less digits than its factorization.

91161692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23860 (or 23858 counting only the distinct ones).

The product of its digits is 5832, while the sum is 35.

The square root of 91161692 is about 9547.8632164480. The cubic root of 91161692 is about 450.0603902491.

The spelling of 91161692 in words is "ninety-one million, one hundred sixty-one thousand, six hundred ninety-two".