11516789 has 2 divisors, whose sum is σ = 11516790. Its totient is φ = 11516788.

The previous prime is 11516759. The next prime is 11516801. The reversal of 11516789 is 98761511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11458225 + 58564 = 3385^2 + 242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11516789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11516719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5758394 + 5758395.

It is an arithmetic number, because the mean of its divisors is an integer number (5758395).

Almost surely, 2^11516789 is an apocalyptic number.

It is an amenable number.

11516789 is a deficient number, since it is larger than the sum of its proper divisors (1).

11516789 is an equidigital number, since it uses as much as digits as its factorization.

11516789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 38.

The square root of 11516789 is about 3393.6394917551. The cubic root of 11516789 is about 225.8276611851.

The spelling of 11516789 in words is "eleven million, five hundred sixteen thousand, seven hundred eighty-nine".