14138719649 has 2 divisors, whose sum is σ = 14138719650. Its totient is φ = 14138719648.

The previous prime is 14138719607. The next prime is 14138719729. The reversal of 14138719649 is 94691783141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7188496225 + 6950223424 = 84785^2 + 83368^2 .

It is an emirp because it is prime and its reverse (94691783141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14138719649 - 2¹² = 14138715553 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14138719649.

It is not a weakly prime, because it can be changed into another prime (14138709649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7069359824 + 7069359825.

It is an arithmetic number, because the mean of its divisors is an integer number (7069359825).

Almost surely, 2^14138719649 is an apocalyptic number.

It is an amenable number.

14138719649 is a deficient number, since it is larger than the sum of its proper divisors (1).

14138719649 is an equidigital number, since it uses as much as digits as its factorization.

14138719649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The spelling of 14138719649 in words is "fourteen billion, one hundred thirty-eight million, seven hundred nineteen thousand, six hundred forty-nine".