3809352020 has 54 divisors (see below), whose sum is σ = 8243790282. Its totient is φ = 1478583936.

The previous prime is 3809352007. The next prime is 3809352077. The reversal of 3809352020 is 202539083.

It can be written as a sum of positive squares in 9 ways, for example, as 4682896 + 3804669124 = 2164^2 + 61682^2 .

It is a super-2 number, since 2×3809352020² = 29022325624556160800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10212554 + ... + 10212926.

It is an arithmetic number, because the mean of its divisors is an integer number (152662783).

Almost surely, 2^3809352020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3809352020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4121895141).

3809352020 is an abundant number, since it is smaller than the sum of its proper divisors (4434438262).

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

3809352020 is an equidigital number, since it uses as much as digits as its factorization.

3809352020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 3809352020 is about 61719.9483149492. The cubic root of 3809352020 is about 1561.7698546587.

The spelling of 3809352020 in words is "three billion, eight hundred nine million, three hundred fifty-two thousand, twenty".