6884159861 has 2 divisors, whose sum is σ = 6884159862. Its totient is φ = 6884159860.

The previous prime is 6884159837. The next prime is 6884159903. The reversal of 6884159861 is 1689514886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4286320900 + 2597838961 = 65470^2 + 50969^2 .

It is a cyclic number.

It is not a de Polignac number, because 6884159861 - 2⁶ = 6884159797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6884159797 and 6884159806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6884359861) 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, 3442079930 + 3442079931.

It is an arithmetic number, because the mean of its divisors is an integer number (3442079931).

Almost surely, 2^6884159861 is an apocalyptic number.

It is an amenable number.

6884159861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6884159861 is an equidigital number, since it uses as much as digits as its factorization.

6884159861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 56.

The square root of 6884159861 is about 82970.8374129127. The cubic root of 6884159861 is about 1902.3203287288.

The spelling of 6884159861 in words is "six billion, eight hundred eighty-four million, one hundred fifty-nine thousand, eight hundred sixty-one".