2185313013 has 40 divisors (see below), whose sum is σ = 3582017208. Its totient is φ = 1319400576.

The previous prime is 2185312967. The next prime is 2185313017. The reversal of 2185313013 is 3103135812.

It can be written as a sum of positive squares in 4 ways, for example, as 513566244 + 1671746769 = 22662^2 + 40887^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2185313013 is a prime.

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 (2185313017) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36231 + ... + 75387.

Almost surely, 2^2185313013 is an apocalyptic number.

It is an amenable number.

2185313013 is a deficient number, since it is larger than the sum of its proper divisors (1396704195).

2185313013 is a wasteful number, since it uses less digits than its factorization.

2185313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39235 (or 39226 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2185313013 is about 46747.3316136868. The cubic root of 2185313013 is about 1297.6907748487.

Adding to 2185313013 its reverse (3103135812), we get a palindrome (5288448825).

The spelling of 2185313013 in words is "two billion, one hundred eighty-five million, three hundred thirteen thousand, thirteen".