6311948693 has 2 divisors, whose sum is σ = 6311948694. Its totient is φ = 6311948692.

The previous prime is 6311948677. The next prime is 6311948701. The reversal of 6311948693 is 3968491136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4874553124 + 1437395569 = 69818^2 + 37913^2 .

It is a cyclic number.

It is not a de Polignac number, because 6311948693 - 2⁴ = 6311948677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6311948603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3155974346 + 3155974347.

It is an arithmetic number, because the mean of its divisors is an integer number (3155974347).

Almost surely, 2^6311948693 is an apocalyptic number.

It is an amenable number.

6311948693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6311948693 is an equidigital number, since it uses as much as digits as its factorization.

6311948693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 50.

The square root of 6311948693 is about 79447.7733671624. The cubic root of 6311948693 is about 1848.0816435893.

The spelling of 6311948693 in words is "six billion, three hundred eleven million, nine hundred forty-eight thousand, six hundred ninety-three".