6828609391 has 2 divisors, whose sum is σ = 6828609392. Its totient is φ = 6828609390.

The previous prime is 6828609379. The next prime is 6828609427. The reversal of 6828609391 is 1939068286.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6828609391 - 2⁹ = 6828608879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6828609341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3414304695 + 3414304696.

It is an arithmetic number, because the mean of its divisors is an integer number (3414304696).

Almost surely, 2^6828609391 is an apocalyptic number.

6828609391 is a deficient number, since it is larger than the sum of its proper divisors (1).

6828609391 is an equidigital number, since it uses as much as digits as its factorization.

6828609391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 6828609391 is about 82635.4003499711. The cubic root of 6828609391 is about 1897.1896948893.

The spelling of 6828609391 in words is "six billion, eight hundred twenty-eight million, six hundred nine thousand, three hundred ninety-one".