11191868 has 24 divisors (see below), whose sum is σ = 20697600. Its totient is φ = 5286960.

The previous prime is 11191867. The next prime is 11191897. The reversal of 11191868 is 86819111.

11191868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11191861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4283 + ... + 6381.

It is an arithmetic number, because the mean of its divisors is an integer number (862400).

Almost surely, 2^11191868 is an apocalyptic number.

It is an amenable number.

11191868 is a deficient number, since it is larger than the sum of its proper divisors (9505732).

11191868 is a wasteful number, since it uses less digits than its factorization.

11191868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2177 (or 2175 counting only the distinct ones).

The product of its digits is 3456, while the sum is 35.

The square root of 11191868 is about 3345.4249356397. The cubic root of 11191868 is about 223.6836254335.

The spelling of 11191868 in words is "eleven million, one hundred ninety-one thousand, eight hundred sixty-eight".