2543385306 has 128 divisors (see below), whose sum is σ = 6503473152. Its totient is φ = 643968000.

The previous prime is 2543385293. The next prime is 2543385311. The reversal of 2543385306 is 6035833452.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5900911 + ... + 5901341.

It is an arithmetic number, because the mean of its divisors is an integer number (50808384).

Almost surely, 2^2543385306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543385306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3251736576).

2543385306 is an abundant number, since it is smaller than the sum of its proper divisors (3960087846).

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

2543385306 is a wasteful number, since it uses less digits than its factorization.

2543385306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748.

The product of its (nonzero) digits is 259200, while the sum is 39.

The square root of 2543385306 is about 50431.9869328981. The cubic root of 2543385306 is about 1365.0148810250.

The spelling of 2543385306 in words is "two billion, five hundred forty-three million, three hundred eighty-five thousand, three hundred six".