13147826749 has 2 divisors, whose sum is σ = 13147826750. Its totient is φ = 13147826748.

The previous prime is 13147826623. The next prime is 13147826771. The reversal of 13147826749 is 94762874131.

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., 9057328900 + 4090497849 = 95170^2 + 63957^2 .

It is a cyclic number.

It is not a de Polignac number, because 13147826749 - 2²⁵ = 13114272317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13147826696 and 13147826705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13147826779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6573913374 + 6573913375.

It is an arithmetic number, because the mean of its divisors is an integer number (6573913375).

Almost surely, 2^13147826749 is an apocalyptic number.

It is an amenable number.

13147826749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13147826749 is an equidigital number, since it uses as much as digits as its factorization.

13147826749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The spelling of 13147826749 in words is "thirteen billion, one hundred forty-seven million, eight hundred twenty-six thousand, seven hundred forty-nine".