3820687844 has 12 divisors (see below), whose sum is σ = 6686698284. Its totient is φ = 1910202624.

The previous prime is 3820687837. The next prime is 3820687859. The reversal of 3820687844 is 4487860283.

It can be written as a sum of positive squares in 2 ways, for example, as 1985593600 + 1835094244 = 44560^2 + 42838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3820687792 and 3820687801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46652 + ... + 99084.

It is an arithmetic number, because the mean of its divisors is an integer number (557224857).

Almost surely, 2^3820687844 is an apocalyptic number.

It is an amenable number.

3820687844 is a deficient number, since it is larger than the sum of its proper divisors (2866010440).

3820687844 is a wasteful number, since it uses less digits than its factorization.

3820687844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70654 (or 70652 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 50.

The square root of 3820687844 is about 61811.7128382639. The cubic root of 3820687844 is about 1563.3174858583.

The spelling of 3820687844 in words is "three billion, eight hundred twenty million, six hundred eighty-seven thousand, eight hundred forty-four".