111452189 has 2 divisors, whose sum is σ = 111452190. Its totient is φ = 111452188.

The previous prime is 111452183. The next prime is 111452197. The reversal of 111452189 is 981254111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105740089 + 5712100 = 10283^2 + 2390^2 .

It is an emirp because it is prime and its reverse (981254111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111452189 is a prime.

It is a super-3 number, since 3×111452189³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111452183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55726094 + 55726095.

It is an arithmetic number, because the mean of its divisors is an integer number (55726095).

Almost surely, 2^111452189 is an apocalyptic number.

It is an amenable number.

111452189 is a deficient number, since it is larger than the sum of its proper divisors (1).

111452189 is an equidigital number, since it uses as much as digits as its factorization.

111452189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 32.

The square root of 111452189 is about 10557.0918817637. The cubic root of 111452189 is about 481.2412737159.

The spelling of 111452189 in words is "one hundred eleven million, four hundred fifty-two thousand, one hundred eighty-nine".