111188849 has 2 divisors, whose sum is σ = 111188850. Its totient is φ = 111188848.

The previous prime is 111188839. The next prime is 111188867. The reversal of 111188849 is 948881111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85229824 + 25959025 = 9232^2 + 5095^2 .

It is a cyclic number.

It is not a de Polignac number, because 111188849 - 2⁸ = 111188593 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (111188839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55594424 + 55594425.

It is an arithmetic number, because the mean of its divisors is an integer number (55594425).

Almost surely, 2^111188849 is an apocalyptic number.

It is an amenable number.

111188849 is a deficient number, since it is larger than the sum of its proper divisors (1).

111188849 is an equidigital number, since it uses as much as digits as its factorization.

111188849 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 111188849 is about 10544.6123209912. The cubic root of 111188849 is about 480.8619480688.

The spelling of 111188849 in words is "one hundred eleven million, one hundred eighty-eight thousand, eight hundred forty-nine".