2856455863 has 2 divisors, whose sum is σ = 2856455864. Its totient is φ = 2856455862.

The previous prime is 2856455831. The next prime is 2856455869. The reversal of 2856455863 is 3685546582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2856455863 - 2⁵ = 2856455831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2856455863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2856455869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428227931 + 1428227932.

It is an arithmetic number, because the mean of its divisors is an integer number (1428227932).

Almost surely, 2^2856455863 is an apocalyptic number.

2856455863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2856455863 is an equidigital number, since it uses as much as digits as its factorization.

2856455863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912000, while the sum is 52.

The square root of 2856455863 is about 53445.8217543710. The cubic root of 2856455863 is about 1418.8696723029.

The spelling of 2856455863 in words is "two billion, eight hundred fifty-six million, four hundred fifty-five thousand, eight hundred sixty-three".