3638995632 has 100 divisors (see below), whose sum is σ = 10895604720. Its totient is φ = 1171158912.

The previous prime is 3638995609. The next prime is 3638995637. The reversal of 3638995632 is 2365998363.

3638995632 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 (54).

It is not an unprimeable number, because it can be changed into a prime (3638995637) 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, 10828 + ... + 85995.

Almost surely, 2^3638995632 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 3638995632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5447802360).

3638995632 is an abundant number, since it is smaller than the sum of its proper divisors (7256609088).

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

3638995632 is a wasteful number, since it uses less digits than its factorization.

3638995632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96872 (or 96857 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The square root of 3638995632 is about 60324.0883229908. The cubic root of 3638995632 is about 1538.1328402584.

The spelling of 3638995632 in words is "three billion, six hundred thirty-eight million, nine hundred ninety-five thousand, six hundred thirty-two".