2045311530 has 64 divisors (see below), whose sum is σ = 5071033728. Its totient is φ = 527558400.

The previous prime is 2045311423. The next prime is 2045311573. The reversal of 2045311530 is 351135402.

It is a self number, because there is not a number n which added to its sum of digits gives 2045311530.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186705 + ... + 197355.

It is an arithmetic number, because the mean of its divisors is an integer number (79234902).

Almost surely, 2^2045311530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2045311530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2535516864).

2045311530 is an abundant number, since it is smaller than the sum of its proper divisors (3025722198).

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

2045311530 is a wasteful number, since it uses less digits than its factorization.

2045311530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10871.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 2045311530 is about 45225.1205636867. The cubic root of 2045311530 is about 1269.3649107275.

Adding to 2045311530 its reverse (351135402), we get a palindrome (2396446932).

The spelling of 2045311530 in words is "two billion, forty-five million, three hundred eleven thousand, five hundred thirty".