12389345618 has 16 divisors (see below), whose sum is σ = 21066904320. Its totient is φ = 5417203536.

The previous prime is 12389345611. The next prime is 12389345621. The reversal of 12389345618 is 81654398321.

It is a happy number.

12389345618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12389345611) 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 in 7 ways as a sum of consecutive naturals, for example, 12539330 + ... + 12540317.

It is an arithmetic number, because the mean of its divisors is an integer number (1316681520).

Almost surely, 2^12389345618 is an apocalyptic number.

12389345618 is a deficient number, since it is larger than the sum of its proper divisors (8677558702).

12389345618 is a wasteful number, since it uses less digits than its factorization.

12389345618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25079681.

The product of its digits is 1244160, while the sum is 50.

The spelling of 12389345618 in words is "twelve billion, three hundred eighty-nine million, three hundred forty-five thousand, six hundred eighteen".