2543683345 has 24 divisors (see below), whose sum is σ = 3556776744. Its totient is φ = 1741291776.

The previous prime is 2543683291. The next prime is 2543683369. The reversal of 2543683345 is 5433863452.

2543683345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 36578304 + 2507105041 = 6048^2 + 50071^2 .

It is not a de Polignac number, because 2543683345 - 2¹³ = 2543675153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 141717 + ... + 158653.

It is an arithmetic number, because the mean of its divisors is an integer number (148199031).

Almost surely, 2^2543683345 is an apocalyptic number.

It is an amenable number.

2543683345 is a deficient number, since it is larger than the sum of its proper divisors (1013093399).

2543683345 is a wasteful number, since it uses less digits than its factorization.

2543683345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17569 (or 17562 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 43.

The square root of 2543683345 is about 50434.9417071141. The cubic root of 2543683345 is about 1365.0681973378.

The spelling of 2543683345 in words is "two billion, five hundred forty-three million, six hundred eighty-three thousand, three hundred forty-five".