2116564830 has 40 divisors (see below), whose sum is σ = 5691209832. Its totient is φ = 564417072.

The previous prime is 2116564829. The next prime is 2116564837. The reversal of 2116564830 is 384656112.

It is a happy number.

2116564830 is a `hidden beast` number, since 2 + 1 + 1 + 6 + 5 + 648 + 3 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116564837) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1305712 + ... + 1307331.

Almost surely, 2^2116564830 is an apocalyptic number.

2116564830 is an abundant number, since it is smaller than the sum of its proper divisors (3574645002).

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

2116564830 is a wasteful number, since it uses less digits than its factorization.

2116564830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613062 (or 2613053 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 2116564830 is about 46006.1390468707. The cubic root of 2116564830 is about 1283.9374259837.

The spelling of 2116564830 in words is "two billion, one hundred sixteen million, five hundred sixty-four thousand, eight hundred thirty".