3820867866 has 48 divisors (see below), whose sum is σ = 8345640264. Its totient is φ = 1263330432.

The previous prime is 3820867837. The next prime is 3820867873. The reversal of 3820867866 is 6687680283.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3816644841 + 4223025 = 61779^2 + 2055^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3088200 + ... + 3089436.

Almost surely, 2^3820867866 is an apocalyptic number.

3820867866 is an abundant number, since it is smaller than the sum of its proper divisors (4524772398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3820867866 is a wasteful number, since it uses less digits than its factorization.

3820867866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495 (or 2492 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The square root of 3820867866 is about 61813.1690337908. The cubic root of 3820867866 is about 1563.3420387776.

The spelling of 3820867866 in words is "three billion, eight hundred twenty million, eight hundred sixty-seven thousand, eight hundred sixty-six".