2165315312 has 40 divisors (see below), whose sum is σ = 4409301120. Its totient is φ = 1028111040.

The previous prime is 2165315293. The next prime is 2165315377. The reversal of 2165315312 is 2135135612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29987 + ... + 72317.

It is an arithmetic number, because the mean of its divisors is an integer number (110232528).

Almost surely, 2^2165315312 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 2165315312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2204650560).

2165315312 is an abundant number, since it is smaller than the sum of its proper divisors (2243985808).

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

2165315312 is a wasteful number, since it uses less digits than its factorization.

2165315312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42501 (or 42495 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 2165315312 is about 46532.9486708074. The cubic root of 2165315312 is about 1293.7202688462.

The spelling of 2165315312 in words is "two billion, one hundred sixty-five million, three hundred fifteen thousand, three hundred twelve".