2194928613 has 12 divisors (see below), whose sum is σ = 3172443820. Its totient is φ = 1462366656.

The previous prime is 2194928573. The next prime is 2194928627. The reversal of 2194928613 is 3168294912.

2194928613 is a `hidden beast` number, since 2 + 1 + 9 + 4 + 9 + 28 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1729145889 + 465782724 = 41583^2 + 21582^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2194928613 is a prime.

It is a super-2 number, since 2×2194928613² = 9635423232332207538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2194928683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61306 + ... + 90267.

Almost surely, 2^2194928613 is an apocalyptic number.

It is an amenable number.

2194928613 is a deficient number, since it is larger than the sum of its proper divisors (977515207).

2194928613 is a wasteful number, since it uses less digits than its factorization.

2194928613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153188 (or 153185 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 2194928613 is about 46850.0652400826. The cubic root of 2194928613 is about 1299.5913139395.

The spelling of 2194928613 in words is "two billion, one hundred ninety-four million, nine hundred twenty-eight thousand, six hundred thirteen".