2543535820 has 24 divisors (see below), whose sum is σ = 6104486304. Its totient is φ = 872069376.

The previous prime is 2543535817. The next prime is 2543535821. The reversal of 2543535820 is 285353452.

It is a self number, because there is not a number n which added to its sum of digits gives 2543535820.

It is not an unprimeable number, because it can be changed into a prime (2543535821) by changing a digit.

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, 9083917 + ... + 9084196.

It is an arithmetic number, because the mean of its divisors is an integer number (254353596).

Almost surely, 2^2543535820 is an apocalyptic number.

2543535820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2543535820 is an abundant number, since it is smaller than the sum of its proper divisors (3560950484).

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

2543535820 is a wasteful number, since it uses less digits than its factorization.

2543535820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18168129 (or 18168127 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 2543535820 is about 50433.4791581941. The cubic root of 2543535820 is about 1365.0418070536.

The spelling of 2543535820 in words is "two billion, five hundred forty-three million, five hundred thirty-five thousand, eight hundred twenty".