3644542748 has 144 divisors (see below), whose sum is σ = 8258342400. Its totient is φ = 1377129600.

The previous prime is 3644542711. The next prime is 3644542771. The reversal of 3644542748 is 8472454463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26219663 + ... + 26219801.

It is an arithmetic number, because the mean of its divisors is an integer number (57349600).

Almost surely, 2^3644542748 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 3644542748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4129171200).

3644542748 is an abundant number, since it is smaller than the sum of its proper divisors (4613799652).

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

3644542748 is a wasteful number, since it uses less digits than its factorization.

3644542748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352 (or 339 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 47.

The square root of 3644542748 is about 60370.0484346335. The cubic root of 3644542748 is about 1538.9139962379.

The spelling of 3644542748 in words is "three billion, six hundred forty-four million, five hundred forty-two thousand, seven hundred forty-eight".