2113758985 has 16 divisors (see below), whose sum is σ = 2783171664. Its totient is φ = 1531475712.

The previous prime is 2113758973. The next prime is 2113759001. The reversal of 2113758985 is 5898573112.

It can be written as a sum of positive squares in 8 ways, for example, as 94245264 + 2019513721 = 9708^2 + 44939^2 .

It is not a de Polignac number, because 2113758985 - 2⁹ = 2113758473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303342 + ... + 310231.

It is an arithmetic number, because the mean of its divisors is an integer number (173948229).

Almost surely, 2^2113758985 is an apocalyptic number.

It is an amenable number.

2113758985 is a deficient number, since it is larger than the sum of its proper divisors (669412679).

2113758985 is a wasteful number, since it uses less digits than its factorization.

2113758985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613644.

The product of its digits is 604800, while the sum is 49.

The square root of 2113758985 is about 45975.6346883868. The cubic root of 2113758985 is about 1283.3698203303.

The spelling of 2113758985 in words is "two billion, one hundred thirteen million, seven hundred fifty-eight thousand, nine hundred eighty-five".