2113264985 has 16 divisors (see below), whose sum is σ = 2891636496. Its totient is φ = 1468766208.

The previous prime is 2113264981. The next prime is 2113264999. The reversal of 2113264985 is 5894623112.

It can be written as a sum of positive squares in 8 ways, for example, as 82500889 + 2030764096 = 9083^2 + 45064^2 .

It is not a de Polignac number, because 2113264985 - 2² = 2113264981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2113264981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955124 + ... + 957333.

It is an arithmetic number, because the mean of its divisors is an integer number (180727281).

Almost surely, 2^2113264985 is an apocalyptic number.

It is an amenable number.

2113264985 is a deficient number, since it is larger than the sum of its proper divisors (778371511).

2113264985 is a wasteful number, since it uses less digits than its factorization.

2113264985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912492.

The product of its digits is 103680, while the sum is 41.

The square root of 2113264985 is about 45970.2619635781. The cubic root of 2113264985 is about 1283.2698350921.

The spelling of 2113264985 in words is "two billion, one hundred thirteen million, two hundred sixty-four thousand, nine hundred eighty-five".