2543856834 has 16 divisors (see below), whose sum is σ = 5121408960. Its totient is φ = 842336400.

The previous prime is 2543856827. The next prime is 2543856839. The reversal of 2543856834 is 4386583452.

It is not an unprimeable number, because it can be changed into a prime (2543856839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1402989 + ... + 1404800.

It is an arithmetic number, because the mean of its divisors is an integer number (320088060).

Almost surely, 2^2543856834 is an apocalyptic number.

2543856834 is an abundant number, since it is smaller than the sum of its proper divisors (2577552126).

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

2543856834 is a wasteful number, since it uses less digits than its factorization.

2543856834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807945.

The product of its digits is 2764800, while the sum is 48.

The square root of 2543856834 is about 50436.6616064148. The cubic root of 2543856834 is about 1365.0992309350.

The spelling of 2543856834 in words is "two billion, five hundred forty-three million, eight hundred fifty-six thousand, eight hundred thirty-four".