2243939568 has 80 divisors (see below), whose sum is σ = 6263244960. Its totient is φ = 688177152.

The previous prime is 2243939567. The next prime is 2243939573. The reversal of 2243939568 is 8659393422.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2243939568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243939561) 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, 189568 + ... + 201056.

It is an arithmetic number, because the mean of its divisors is an integer number (78290562).

Almost surely, 2^2243939568 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 2243939568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3131622480).

2243939568 is an abundant number, since it is smaller than the sum of its proper divisors (4019305392).

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

2243939568 is a wasteful number, since it uses less digits than its factorization.

2243939568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11826 (or 11820 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 51.

The square root of 2243939568 is about 47370.2392647536. The cubic root of 2243939568 is about 1309.1931336489.

The spelling of 2243939568 in words is "two billion, two hundred forty-three million, nine hundred thirty-nine thousand, five hundred sixty-eight".