6409827643 has 2 divisors, whose sum is σ = 6409827644. Its totient is φ = 6409827642.

The previous prime is 6409827583. The next prime is 6409827649. The reversal of 6409827643 is 3467289046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6409827643 - 2⁹ = 6409827131 is a prime.

It is not a weakly prime, because it can be changed into another prime (6409827649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204913821 + 3204913822.

It is an arithmetic number, because the mean of its divisors is an integer number (3204913822).

Almost surely, 2^6409827643 is an apocalyptic number.

6409827643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6409827643 is an equidigital number, since it uses as much as digits as its factorization.

6409827643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The square root of 6409827643 is about 80061.3992071085. The cubic root of 6409827643 is about 1857.5853782186.

The spelling of 6409827643 in words is "six billion, four hundred nine million, eight hundred twenty-seven thousand, six hundred forty-three".