3784756644 has 96 divisors (see below), whose sum is σ = 10148275200. Its totient is φ = 1218551040.

The previous prime is 3784756637. The next prime is 3784756649. The reversal of 3784756644 is 4466574873.

3784756644 is a `hidden beast` number, since 3 + 78 + 4 + 7 + 566 + 4 + 4 = 666.

3784756644 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 (3784756649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2935552 + ... + 2936840.

It is an arithmetic number, because the mean of its divisors is an integer number (105711200).

Almost surely, 2^3784756644 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 3784756644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5074137600).

3784756644 is an abundant number, since it is smaller than the sum of its proper divisors (6363518556).

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

3784756644 is a wasteful number, since it uses less digits than its factorization.

3784756644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2210 (or 2202 counting only the distinct ones).

The product of its digits is 13547520, while the sum is 54.

The square root of 3784756644 is about 61520.3758441055. The cubic root of 3784756644 is about 1558.4013652919.

The spelling of 3784756644 in words is "three billion, seven hundred eighty-four million, seven hundred fifty-six thousand, six hundred forty-four".