12438046349 has 2 divisors, whose sum is σ = 12438046350. Its totient is φ = 12438046348.

The previous prime is 12438046343. The next prime is 12438046351. The reversal of 12438046349 is 94364083421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9352243849 + 3085802500 = 96707^2 + 55550^2 .

It is a cyclic number.

It is not a de Polignac number, because 12438046349 - 2⁴ = 12438046333 is a prime.

Together with 12438046351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12438046343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6219023174 + 6219023175.

It is an arithmetic number, because the mean of its divisors is an integer number (6219023175).

Almost surely, 2^12438046349 is an apocalyptic number.

It is an amenable number.

12438046349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12438046349 is an equidigital number, since it uses as much as digits as its factorization.

12438046349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 12438046349 in words is "twelve billion, four hundred thirty-eight million, forty-six thousand, three hundred forty-nine".