3644615832 has 192 divisors, whose sum is σ = 11160828000. Its totient is φ = 984023040.

The previous prime is 3644615831. The next prime is 3644615869. The reversal of 3644615832 is 2385164463.

3644615832 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644615831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1093144 + ... + 1096472.

Almost surely, 2^3644615832 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 3644615832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5580414000).

3644615832 is an abundant number, since it is smaller than the sum of its proper divisors (7516212168).

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

3644615832 is a wasteful number, since it uses less digits than its factorization.

3644615832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402 (or 3387 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 3644615832 is about 60370.6537317594. The cubic root of 3644615832 is about 1538.9242827811.

The spelling of 3644615832 in words is "three billion, six hundred forty-four million, six hundred fifteen thousand, eight hundred thirty-two".