6395994071 has 2 divisors, whose sum is σ = 6395994072. Its totient is φ = 6395994070.

The previous prime is 6395994043. The next prime is 6395994083. The reversal of 6395994071 is 1704995936.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6395994071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6395994091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197997035 + 3197997036.

It is an arithmetic number, because the mean of its divisors is an integer number (3197997036).

Almost surely, 2^6395994071 is an apocalyptic number.

6395994071 is a deficient number, since it is larger than the sum of its proper divisors (1).

6395994071 is an equidigital number, since it uses as much as digits as its factorization.

6395994071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 6395994071 is about 79974.9590246847. The cubic root of 6395994071 is about 1856.2480801924.

The spelling of 6395994071 in words is "six billion, three hundred ninety-five million, nine hundred ninety-four thousand, seventy-one".