6431864941 has 2 divisors, whose sum is σ = 6431864942. Its totient is φ = 6431864940.

The previous prime is 6431864939. The next prime is 6431864953. The reversal of 6431864941 is 1494681346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3739811716 + 2692053225 = 61154^2 + 51885^2 .

It is a cyclic number.

It is not a de Polignac number, because 6431864941 - 2¹ = 6431864939 is a prime.

Together with 6431864939, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6431864891 and 6431864900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6431861941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215932470 + 3215932471.

It is an arithmetic number, because the mean of its divisors is an integer number (3215932471).

Almost surely, 2^6431864941 is an apocalyptic number.

It is an amenable number.

6431864941 is a deficient number, since it is larger than the sum of its proper divisors (1).

6431864941 is an equidigital number, since it uses as much as digits as its factorization.

6431864941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 46.

The square root of 6431864941 is about 80198.9086022996. The cubic root of 6431864941 is about 1859.7117660466.

The spelling of 6431864941 in words is "six billion, four hundred thirty-one million, eight hundred sixty-four thousand, nine hundred forty-one".