111180389 has 2 divisors, whose sum is σ = 111180390. Its totient is φ = 111180388.

The previous prime is 111180359. The next prime is 111180431. The reversal of 111180389 is 983081111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58400164 + 52780225 = 7642^2 + 7265^2 .

It is a cyclic number.

It is not a de Polignac number, because 111180389 - 2⁸ = 111180133 is a prime.

It is a super-2 number, since 2×111180389² = 24722157796382642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111180319) 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, 55590194 + 55590195.

It is an arithmetic number, because the mean of its divisors is an integer number (55590195).

Almost surely, 2^111180389 is an apocalyptic number.

It is an amenable number.

111180389 is a deficient number, since it is larger than the sum of its proper divisors (1).

111180389 is an equidigital number, since it uses as much as digits as its factorization.

111180389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 32.

The square root of 111180389 is about 10544.2111606322. The cubic root of 111180389 is about 480.8497520159.

The spelling of 111180389 in words is "one hundred eleven million, one hundred eighty thousand, three hundred eighty-nine".