2543668316 has 24 divisors (see below), whose sum is σ = 5386592736. Its totient is φ = 1026017280.

The previous prime is 2543668297. The next prime is 2543668319. The reversal of 2543668316 is 6138663452.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543668319) 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 7 ways as a sum of consecutive naturals, for example, 2671445 + ... + 2672396.

It is an arithmetic number, because the mean of its divisors is an integer number (224441364).

Almost surely, 2^2543668316 is an apocalyptic number.

It is an amenable number.

2543668316 is an abundant number, since it is smaller than the sum of its proper divisors (2842924420).

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

2543668316 is a wasteful number, since it uses less digits than its factorization.

2543668316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343869 (or 5343867 counting only the distinct ones).

The product of its digits is 622080, while the sum is 44.

The square root of 2543668316 is about 50434.7927129675. The cubic root of 2543668316 is about 1365.0655088939.

The spelling of 2543668316 in words is "two billion, five hundred forty-three million, six hundred sixty-eight thousand, three hundred sixteen".