2543938368 has 112 divisors (see below), whose sum is σ = 7250436096. Its totient is φ = 784903680.

The previous prime is 2543938339. The next prime is 2543938381. The reversal of 2543938368 is 8638393452.

It is a self number, because there is not a number n which added to its sum of digits gives 2543938368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127605 + ... + 146187.

Almost surely, 2^2543938368 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 2543938368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3625218048).

2543938368 is an abundant number, since it is smaller than the sum of its proper divisors (4706497728).

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

2543938368 is a wasteful number, since it uses less digits than its factorization.

2543938368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18652 (or 18642 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 51.

The square root of 2543938368 is about 50437.4698810319. The cubic root of 2543938368 is about 1365.1138151954.

The spelling of 2543938368 in words is "two billion, five hundred forty-three million, nine hundred thirty-eight thousand, three hundred sixty-eight".