2818123530 has 64 divisors (see below), whose sum is σ = 7108577280. Its totient is φ = 713630016.

The previous prime is 2818123519. The next prime is 2818123531. The reversal of 2818123530 is 353218182.

It is a junction number, because it is equal to n+sod(n) for n = 2818123491 and 2818123500.

It is not an unprimeable number, because it can be changed into a prime (2818123531) 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 31 ways as a sum of consecutive naturals, for example, 81219 + ... + 110601.

It is an arithmetic number, because the mean of its divisors is an integer number (111071520).

Almost surely, 2^2818123530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2818123530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3554288640).

2818123530 is an abundant number, since it is smaller than the sum of its proper divisors (4290453750).

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

2818123530 is a wasteful number, since it uses less digits than its factorization.

2818123530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29555.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2818123530 is about 53086.0012621030. The cubic root of 2818123530 is about 1412.4942070924.

The spelling of 2818123530 in words is "two billion, eight hundred eighteen million, one hundred twenty-three thousand, five hundred thirty".