6816949159 has 2 divisors, whose sum is σ = 6816949160. Its totient is φ = 6816949158.

The previous prime is 6816949157. The next prime is 6816949163. The reversal of 6816949159 is 9519496186.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6816949159 - 2¹ = 6816949157 is a prime.

Together with 6816949157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6816949157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3408474579 + 3408474580.

It is an arithmetic number, because the mean of its divisors is an integer number (3408474580).

Almost surely, 2^6816949159 is an apocalyptic number.

6816949159 is a deficient number, since it is larger than the sum of its proper divisors (1).

6816949159 is an equidigital number, since it uses as much as digits as its factorization.

6816949159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 58.

The square root of 6816949159 is about 82564.8179250702. The cubic root of 6816949159 is about 1896.1092272073.

The spelling of 6816949159 in words is "six billion, eight hundred sixteen million, nine hundred forty-nine thousand, one hundred fifty-nine".