12186903889 has 2 divisors, whose sum is σ = 12186903890. Its totient is φ = 12186903888.

The previous prime is 12186903881. The next prime is 12186903893. The reversal of 12186903889 is 98830968121.

12186903889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12038478400 + 148425489 = 109720^2 + 12183^2 .

It is an emirp because it is prime and its reverse (98830968121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12186903889 - 2³ = 12186903881 is a prime.

It is not a weakly prime, because it can be changed into another prime (12186903881) 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, 6093451944 + 6093451945.

It is an arithmetic number, because the mean of its divisors is an integer number (6093451945).

Almost surely, 2^12186903889 is an apocalyptic number.

It is an amenable number.

12186903889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12186903889 is an equidigital number, since it uses as much as digits as its factorization.

12186903889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 12186903889 in words is "twelve billion, one hundred eighty-six million, nine hundred three thousand, eight hundred eighty-nine".