12918942438 has 8 divisors (see below), whose sum is σ = 25837884888. Its totient is φ = 4306314144.

The previous prime is 12918942409. The next prime is 12918942451. The reversal of 12918942438 is 83424981921.

It is a sphenic number, since it is the product of 3 distinct primes.

12918942438 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076578531 + ... + 1076578542.

It is an arithmetic number, because the mean of its divisors is an integer number (3229735611).

Almost surely, 2^12918942438 is an apocalyptic number.

12918942438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12918942438 is a wasteful number, since it uses less digits than its factorization.

12918942438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153157078.

The product of its digits is 995328, while the sum is 51.

The spelling of 12918942438 in words is "twelve billion, nine hundred eighteen million, nine hundred forty-two thousand, four hundred thirty-eight".