3644748822 has 128 divisors (see below), whose sum is σ = 8740182528. Its totient is φ = 998784000.

The previous prime is 3644748803. The next prime is 3644748827. The reversal of 3644748822 is 2288474463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644748827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11871993 + ... + 11872299.

It is an arithmetic number, because the mean of its divisors is an integer number (68282676).

Almost surely, 2^3644748822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644748822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4370091264).

3644748822 is an abundant number, since it is smaller than the sum of its proper divisors (5095433706).

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

3644748822 is a wasteful number, since it uses less digits than its factorization.

3644748822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574.

The product of its digits is 2064384, while the sum is 48.

The square root of 3644748822 is about 60371.7551674622. The cubic root of 3644748822 is about 1538.9430007165.

The spelling of 3644748822 in words is "three billion, six hundred forty-four million, seven hundred forty-eight thousand, eight hundred twenty-two".