111116189 has 2 divisors, whose sum is σ = 111116190. Its totient is φ = 111116188.

The previous prime is 111116153. The next prime is 111116231. The reversal of 111116189 is 981611111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87516025 + 23600164 = 9355^2 + 4858^2 .

It is a cyclic number.

It is not a de Polignac number, because 111116189 - 2²⁰ = 110067613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111116149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55558094 + 55558095.

It is an arithmetic number, because the mean of its divisors is an integer number (55558095).

Almost surely, 2^111116189 is an apocalyptic number.

It is an amenable number.

111116189 is a deficient number, since it is larger than the sum of its proper divisors (1).

111116189 is an equidigital number, since it uses as much as digits as its factorization.

111116189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 29.

The square root of 111116189 is about 10541.1663965616. The cubic root of 111116189 is about 480.7571802406.

The spelling of 111116189 in words is "one hundred eleven million, one hundred sixteen thousand, one hundred eighty-nine".