12318417738 has 64 divisors (see below), whose sum is σ = 29889699840. Its totient is φ = 3729495600.

The previous prime is 12318417721. The next prime is 12318417739. The reversal of 12318417738 is 83771481321.

12318417738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12318417693 and 12318417702.

It is not an unprimeable number, because it can be changed into a prime (12318417739) 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 31 ways as a sum of consecutive naturals, for example, 696343 + ... + 713813.

It is an arithmetic number, because the mean of its divisors is an integer number (467026560).

Almost surely, 2^12318417738 is an apocalyptic number.

12318417738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12318417738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14944849920).

12318417738 is an abundant number, since it is smaller than the sum of its proper divisors (17571282102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12318417738 is a wasteful number, since it uses less digits than its factorization.

12318417738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18680 (or 18674 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The spelling of 12318417738 in words is "twelve billion, three hundred eighteen million, four hundred seventeen thousand, seven hundred thirty-eight".