3839207820 has 144 divisors (see below), whose sum is σ = 12527514720. Its totient is φ = 875943936.

The previous prime is 3839207819. The next prime is 3839207851. The reversal of 3839207820 is 287029383.

3839207820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2577636 + ... + 2579124.

It is an arithmetic number, because the mean of its divisors is an integer number (86996630).

Almost surely, 2^3839207820 is an apocalyptic number.

3839207820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3839207820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6263757360).

3839207820 is an abundant number, since it is smaller than the sum of its proper divisors (8688306900).

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

3839207820 is a wasteful number, since it uses less digits than its factorization.

3839207820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2383 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 3839207820 is about 61961.3413347387. The cubic root of 3839207820 is about 1565.8393657337.

The spelling of 3839207820 in words is "three billion, eight hundred thirty-nine million, two hundred seven thousand, eight hundred twenty".