13722609749 has 2 divisors, whose sum is σ = 13722609750. Its totient is φ = 13722609748.

The previous prime is 13722609743. The next prime is 13722609751. The reversal of 13722609749 is 94790622731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8109903025 + 5612706724 = 90055^2 + 74918^2 .

It is a cyclic number.

It is not a de Polignac number, because 13722609749 - 2¹² = 13722605653 is a prime.

Together with 13722609751, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13722609697 and 13722609706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13722609743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6861304874 + 6861304875.

It is an arithmetic number, because the mean of its divisors is an integer number (6861304875).

Almost surely, 2^13722609749 is an apocalyptic number.

It is an amenable number.

13722609749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13722609749 is an equidigital number, since it uses as much as digits as its factorization.

13722609749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The spelling of 13722609749 in words is "thirteen billion, seven hundred twenty-two million, six hundred nine thousand, seven hundred forty-nine".