6311948749 has 2 divisors, whose sum is σ = 6311948750. Its totient is φ = 6311948748.

The previous prime is 6311948743. The next prime is 6311948759. The reversal of 6311948749 is 9478491136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4187384100 + 2124564649 = 64710^2 + 46093^2 .

It is a cyclic number.

It is not a de Polignac number, because 6311948749 - 2¹⁹ = 6311424461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6311948696 and 6311948705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6311948743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3155974374 + 3155974375.

It is an arithmetic number, because the mean of its divisors is an integer number (3155974375).

Almost surely, 2^6311948749 is an apocalyptic number.

It is an amenable number.

6311948749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6311948749 is an equidigital number, since it uses as much as digits as its factorization.

6311948749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 6311948749 is about 79447.7737195952. The cubic root of 6311948749 is about 1848.0816490547.

The spelling of 6311948749 in words is "six billion, three hundred eleven million, nine hundred forty-eight thousand, seven hundred forty-nine".