6548139317 has 2 divisors, whose sum is σ = 6548139318. Its totient is φ = 6548139316.

The previous prime is 6548139313. The next prime is 6548139337. The reversal of 6548139317 is 7139318456.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5920686916 + 627452401 = 76946^2 + 25049^2 .

It is a cyclic number.

It is not a de Polignac number, because 6548139317 - 2² = 6548139313 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6548139313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3274069658 + 3274069659.

It is an arithmetic number, because the mean of its divisors is an integer number (3274069659).

Almost surely, 2^6548139317 is an apocalyptic number.

It is an amenable number.

6548139317 is a deficient number, since it is larger than the sum of its proper divisors (1).

6548139317 is an equidigital number, since it uses as much as digits as its factorization.

6548139317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 6548139317 is about 80920.5741267324. The cubic root of 6548139317 is about 1870.8514445527.

It can be divided in two parts, 6548139 and 317, that added together give a palindrome (6548456).

The spelling of 6548139317 in words is "six billion, five hundred forty-eight million, one hundred thirty-nine thousand, three hundred seventeen".