2856171812 has 24 divisors (see below), whose sum is σ = 5458606272. Its totient is φ = 1299664800.

The previous prime is 2856171797. The next prime is 2856171817. The reversal of 2856171812 is 2181716582.

2856171812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2856171812.

It is not an unprimeable number, because it can be changed into a prime (2856171817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383114 + ... + 390497.

It is an arithmetic number, because the mean of its divisors is an integer number (227441928).

Almost surely, 2^2856171812 is an apocalyptic number.

It is an amenable number.

2856171812 is a deficient number, since it is larger than the sum of its proper divisors (2602434460).

2856171812 is a wasteful number, since it uses less digits than its factorization.

2856171812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773699 (or 773697 counting only the distinct ones).

The product of its digits is 53760, while the sum is 41.

The square root of 2856171812 is about 53443.1643149992. The cubic root of 2856171812 is about 1418.8226391111.

The spelling of 2856171812 in words is "two billion, eight hundred fifty-six million, one hundred seventy-one thousand, eight hundred twelve".