2821869806 has 16 divisors (see below), whose sum is σ = 4838413824. Its totient is φ = 1209142104.

The previous prime is 2821869803. The next prime is 2821869811. The reversal of 2821869806 is 6089681282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821869803) 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, 71591 + ... + 103773.

It is an arithmetic number, because the mean of its divisors is an integer number (302400864).

Almost surely, 2^2821869806 is an apocalyptic number.

2821869806 is a deficient number, since it is larger than the sum of its proper divisors (2016544018).

2821869806 is a wasteful number, since it uses less digits than its factorization.

2821869806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38455.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 2821869806 is about 53121.2745140777. The cubic root of 2821869806 is about 1413.1198302570.

The spelling of 2821869806 in words is "two billion, eight hundred twenty-one million, eight hundred sixty-nine thousand, eight hundred six".