3653220852 has 60 divisors (see below), whose sum is σ = 9580637220. Its totient is φ = 1213864704.

The previous prime is 3653220829. The next prime is 3653220859. The reversal of 3653220852 is 2580223563.

It can be written as a sum of positive squares in 2 ways, for example, as 1971892836 + 1681328016 = 44406^2 + 41004^2 .

It is a super-3 number, since 3×3653220852³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3653220859) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 84924 + ... + 120492.

It is an arithmetic number, because the mean of its divisors is an integer number (159677287).

Almost surely, 2^3653220852 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 3653220852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4790318610).

3653220852 is an abundant number, since it is smaller than the sum of its proper divisors (5927416368).

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

3653220852 is a wasteful number, since it uses less digits than its factorization.

3653220852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35902 (or 35891 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 3653220852 is about 60441.8799509082. The cubic root of 3653220852 is about 1540.1344758041.

The spelling of 3653220852 in words is "three billion, six hundred fifty-three million, two hundred twenty thousand, eight hundred fifty-two".