111488189 has 2 divisors, whose sum is σ = 111488190. Its totient is φ = 111488188.

The previous prime is 111488177. The next prime is 111488191. The reversal of 111488189 is 981884111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96727225 + 14760964 = 9835^2 + 3842^2 .

It is a cyclic number.

It is not a de Polignac number, because 111488189 - 2¹⁶ = 111422653 is a prime.

Together with 111488191, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111488119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55744094 + 55744095.

It is an arithmetic number, because the mean of its divisors is an integer number (55744095).

Almost surely, 2^111488189 is an apocalyptic number.

It is an amenable number.

111488189 is a deficient number, since it is larger than the sum of its proper divisors (1).

111488189 is an equidigital number, since it uses as much as digits as its factorization.

111488189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 41.

The square root of 111488189 is about 10558.7967591009. The cubic root of 111488189 is about 481.2930831391.

The spelling of 111488189 in words is "one hundred eleven million, four hundred eighty-eight thousand, one hundred eighty-nine".