111011489 has 2 divisors, whose sum is σ = 111011490. Its totient is φ = 111011488.

The previous prime is 111011473. The next prime is 111011491. The reversal of 111011489 is 984110111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98109025 + 12902464 = 9905^2 + 3592^2 .

It is a cyclic number.

It is not a de Polignac number, because 111011489 - 2⁴ = 111011473 is a prime.

Together with 111011491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111011389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505744 + 55505745.

It is an arithmetic number, because the mean of its divisors is an integer number (55505745).

Almost surely, 2^111011489 is an apocalyptic number.

It is an amenable number.

111011489 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011489 is an equidigital number, since it uses as much as digits as its factorization.

111011489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 26.

The square root of 111011489 is about 10536.1989825553. The cubic root of 111011489 is about 480.6061338597.

The spelling of 111011489 in words is "one hundred eleven million, eleven thousand, four hundred eighty-nine".