2185068613 has 12 divisors (see below), whose sum is σ = 2737339500. Its totient is φ = 1728844992.

The previous prime is 2185068583. The next prime is 2185068623. The reversal of 2185068613 is 3168605812.

It can be written as a sum of positive squares in 2 ways, for example, as 564442564 + 1620626049 = 23758^2 + 40257^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2185068613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185068623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1714488 + ... + 1715761.

It is an arithmetic number, because the mean of its divisors is an integer number (228111625).

Almost surely, 2^2185068613 is an apocalyptic number.

It is an amenable number.

2185068613 is a deficient number, since it is larger than the sum of its proper divisors (552270887).

2185068613 is a wasteful number, since it uses less digits than its factorization.

2185068613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430276 (or 3430269 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 2185068613 is about 46744.7174876477. The cubic root of 2185068613 is about 1297.6423962034.

The spelling of 2185068613 in words is "two billion, one hundred eighty-five million, sixty-eight thousand, six hundred thirteen".