2856746871 has 48 divisors (see below), whose sum is σ = 4624663680. Its totient is φ = 1684647360.

The previous prime is 2856746869. The next prime is 2856746909. The reversal of 2856746871 is 1786476582.

2856746871 is a `hidden beast` number, since 2 + 8 + 567 + 4 + 6 + 8 + 71 = 666.

It is not a de Polignac number, because 2856746871 - 2¹ = 2856746869 is a prime.

It is a super-2 number, since 2×2856746871² = 16322005369936581282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856746171) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 547945 + ... + 553133.

It is an arithmetic number, because the mean of its divisors is an integer number (96347160).

Almost surely, 2^2856746871 is an apocalyptic number.

2856746871 is a deficient number, since it is larger than the sum of its proper divisors (1767916809).

2856746871 is a wasteful number, since it uses less digits than its factorization.

2856746871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5353 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 2856746871 is about 53448.5441429418. The cubic root of 2856746871 is about 1418.9178542020.

The spelling of 2856746871 in words is "two billion, eight hundred fifty-six million, seven hundred forty-six thousand, eight hundred seventy-one".