2865865530 has 64 divisors (see below), whose sum is σ = 7573575168. Its totient is φ = 688253760.

The previous prime is 2865865517. The next prime is 2865865531. The reversal of 2865865530 is 355685682.

2865865530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2865865530.

It is not an unprimeable number, because it can be changed into a prime (2865865531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5272 + ... + 75891.

It is an arithmetic number, because the mean of its divisors is an integer number (118337112).

Almost surely, 2^2865865530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2865865530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3786787584).

2865865530 is an abundant number, since it is smaller than the sum of its proper divisors (4707709638).

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

2865865530 is a wasteful number, since it uses less digits than its factorization.

2865865530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81291.

The product of its (nonzero) digits is 1728000, while the sum is 48.

The square root of 2865865530 is about 53533.7793360417. The cubic root of 2865865530 is about 1420.4259665669.

The spelling of 2865865530 in words is "two billion, eight hundred sixty-five million, eight hundred sixty-five thousand, five hundred thirty".