2543684782 has 4 divisors (see below), whose sum is σ = 3815527176. Its totient is φ = 1271842390.

The previous prime is 2543684761. The next prime is 2543684827. The reversal of 2543684782 is 2874863452.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635921194 + ... + 635921197.

It is an arithmetic number, because the mean of its divisors is an integer number (953881794).

Almost surely, 2^2543684782 is an apocalyptic number.

2543684782 is a deficient number, since it is larger than the sum of its proper divisors (1271842394).

2543684782 is a wasteful number, since it uses less digits than its factorization.

2543684782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271842393.

The product of its digits is 2580480, while the sum is 49.

The square root of 2543684782 is about 50434.9559531879. The cubic root of 2543684782 is about 1365.0684543932.

The spelling of 2543684782 in words is "two billion, five hundred forty-three million, six hundred eighty-four thousand, seven hundred eighty-two".