12389529418 has 32 divisors (see below), whose sum is σ = 21733111296. Its totient is φ = 5187182208.

The previous prime is 12389529407. The next prime is 12389529419. The reversal of 12389529418 is 81492598321.

It is not an unprimeable number, because it can be changed into a prime (12389529419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137055 + ... + 208717.

It is an arithmetic number, because the mean of its divisors is an integer number (679159728).

Almost surely, 2^12389529418 is an apocalyptic number.

12389529418 is a deficient number, since it is larger than the sum of its proper divisors (9343581878).

12389529418 is a wasteful number, since it uses less digits than its factorization.

12389529418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71958.

The product of its digits is 1244160, while the sum is 52.

The spelling of 12389529418 in words is "twelve billion, three hundred eighty-nine million, five hundred twenty-nine thousand, four hundred eighteen".