2543018004 has 120 divisors (see below), whose sum is σ = 6956749800. Its totient is φ = 808980480.

The previous prime is 2543018003. The next prime is 2543018047. The reversal of 2543018004 is 4008103452.

It can be written as a sum of positive squares in 4 ways, for example, as 715455504 + 1827562500 = 26748^2 + 42750^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543018003) 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 39 ways as a sum of consecutive naturals, for example, 834724 + ... + 837764.

It is an arithmetic number, because the mean of its divisors is an integer number (57972915).

Almost surely, 2^2543018004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2543018004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3478374900).

2543018004 is an abundant number, since it is smaller than the sum of its proper divisors (4413731796).

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

2543018004 is a wasteful number, since it uses less digits than its factorization.

2543018004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3175 (or 3164 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2543018004 is about 50428.3452435235. The cubic root of 2543018004 is about 1364.9491684971.

It can be divided in two parts, 25430 and 18004, that added together give a palindrome (43434).

The spelling of 2543018004 in words is "two billion, five hundred forty-three million, eighteen thousand, four".