2853778856 has 8 divisors (see below), whose sum is σ = 5350835370. Its totient is φ = 1426889424.

The previous prime is 2853778849. The next prime is 2853778861. The reversal of 2853778856 is 6588773582.

It can be written as a sum of positive squares in only one way, i.e., 2122076356 + 731702500 = 46066^2 + 27050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2853778795 and 2853778804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178361171 + ... + 178361186.

Almost surely, 2^2853778856 is an apocalyptic number.

It is an amenable number.

2853778856 is a deficient number, since it is larger than the sum of its proper divisors (2497056514).

2853778856 is a wasteful number, since it uses less digits than its factorization.

2853778856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356722363 (or 356722359 counting only the distinct ones).

The product of its digits is 22579200, while the sum is 59.

The square root of 2853778856 is about 53420.7717652974. The cubic root of 2853778856 is about 1418.4262893821.

The spelling of 2853778856 in words is "two billion, eight hundred fifty-three million, seven hundred seventy-eight thousand, eight hundred fifty-six".