13367967449 has 2 divisors, whose sum is σ = 13367967450. Its totient is φ = 13367967448.

The previous prime is 13367967407. The next prime is 13367967451. The reversal of 13367967449 is 94476976331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12912913225 + 455054224 = 113635^2 + 21332^2 .

It is an emirp because it is prime and its reverse (94476976331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13367967449 is a prime.

Together with 13367967451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13367967469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6683983724 + 6683983725.

It is an arithmetic number, because the mean of its divisors is an integer number (6683983725).

Almost surely, 2^13367967449 is an apocalyptic number.

It is an amenable number.

13367967449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13367967449 is an equidigital number, since it uses as much as digits as its factorization.

13367967449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 59.

The spelling of 13367967449 in words is "thirteen billion, three hundred sixty-seven million, nine hundred sixty-seven thousand, four hundred forty-nine".