3683985812 has 36 divisors (see below), whose sum is σ = 7174182708. Its totient is φ = 1645430400.

The previous prime is 3683985779. The next prime is 3683985839. The reversal of 3683985812 is 2185893863.

3683985812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 720707716 + 2963278096 = 26846^2 + 54436^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13112 + ... + 86832.

It is an arithmetic number, because the mean of its divisors is an integer number (199282853).

Almost surely, 2^3683985812 is an apocalyptic number.

It is an amenable number.

3683985812 is a deficient number, since it is larger than the sum of its proper divisors (3490196896).

3683985812 is a wasteful number, since it uses less digits than its factorization.

3683985812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73800 (or 73767 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 53.

The square root of 3683985812 is about 60695.8467442378. The cubic root of 3683985812 is about 1544.4457205348.

The spelling of 3683985812 in words is "three billion, six hundred eighty-three million, nine hundred eighty-five thousand, eight hundred twelve".