2543674638 has 16 divisors (see below), whose sum is σ = 5113175760. Its totient is φ = 843587136.

The previous prime is 2543674621. The next prime is 2543674643. The reversal of 2543674638 is 8364763452.

It is a congruent number.

It is an unprimeable number.

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, 1074823 + ... + 1077186.

It is an arithmetic number, because the mean of its divisors is an integer number (319573485).

Almost surely, 2^2543674638 is an apocalyptic number.

2543674638 is an abundant number, since it is smaller than the sum of its proper divisors (2569501122).

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

2543674638 is a wasteful number, since it uses less digits than its factorization.

2543674638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152211.

The product of its digits is 2903040, while the sum is 48.

The square root of 2543674638 is about 50434.8553879160. The cubic root of 2543674638 is about 1365.0666397983.

The spelling of 2543674638 in words is "two billion, five hundred forty-three million, six hundred seventy-four thousand, six hundred thirty-eight".