3639041744 has 80 divisors (see below), whose sum is σ = 7694174208. Its totient is φ = 1657345536.

The previous prime is 3639041741. The next prime is 3639041753. The reversal of 3639041744 is 4471409363.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639041741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9166154 + ... + 9166550.

Almost surely, 2^3639041744 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 3639041744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3847087104).

3639041744 is an abundant number, since it is smaller than the sum of its proper divisors (4055132464).

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

3639041744 is a wasteful number, since it uses less digits than its factorization.

3639041744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 886 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 3639041744 is about 60324.4705239922. The cubic root of 3639041744 is about 1538.1393371135.

The spelling of 3639041744 in words is "three billion, six hundred thirty-nine million, forty-one thousand, seven hundred forty-four".