11119891 has 2 divisors, whose sum is σ = 11119892. Its totient is φ = 11119890.

The previous prime is 11119859. The next prime is 11119909. The reversal of 11119891 is 19891111.

11119891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11119891 - 2⁵ = 11119859 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11119831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5559945 + 5559946.

It is an arithmetic number, because the mean of its divisors is an integer number (5559946).

Almost surely, 2^11119891 is an apocalyptic number.

11119891 is a deficient number, since it is larger than the sum of its proper divisors (1).

11119891 is an equidigital number, since it uses as much as digits as its factorization.

11119891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 31.

The square root of 11119891 is about 3334.6500566026. The cubic root of 11119891 is about 223.2030766888.

It can be divided in two parts, 1111 and 9891, that multiplied together give a palindrome (10988901).

The spelling of 11119891 in words is "eleven million, one hundred nineteen thousand, eight hundred ninety-one".