6463813963 has 2 divisors, whose sum is σ = 6463813964. Its totient is φ = 6463813962.

The previous prime is 6463813949. The next prime is 6463814011. The reversal of 6463813963 is 3693183646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6463813963 - 2⁵ = 6463813931 is a prime.

It is not a weakly prime, because it can be changed into another prime (6463813903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3231906981 + 3231906982.

It is an arithmetic number, because the mean of its divisors is an integer number (3231906982).

Almost surely, 2^6463813963 is an apocalyptic number.

6463813963 is a deficient number, since it is larger than the sum of its proper divisors (1).

6463813963 is an equidigital number, since it uses as much as digits as its factorization.

6463813963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 49.

The square root of 6463813963 is about 80397.8479998066. The cubic root of 6463813963 is about 1862.7859321564.

The spelling of 6463813963 in words is "six billion, four hundred sixty-three million, eight hundred thirteen thousand, nine hundred sixty-three".