2112915685 has 16 divisors (see below), whose sum is σ = 2584118592. Its totient is φ = 1658131200.

The previous prime is 2112915683. The next prime is 2112915709. The reversal of 2112915685 is 5865192112.

It is not a de Polignac number, because 2112915685 - 2¹ = 2112915683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112915683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67650 + ... + 93820.

It is an arithmetic number, because the mean of its divisors is an integer number (161507412).

Almost surely, 2^2112915685 is an apocalyptic number.

It is an amenable number.

2112915685 is a deficient number, since it is larger than the sum of its proper divisors (471202907).

2112915685 is a wasteful number, since it uses less digits than its factorization.

2112915685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26484.

The product of its digits is 43200, while the sum is 40.

The square root of 2112915685 is about 45966.4626113431. The cubic root of 2112915685 is about 1283.1991276236.

The spelling of 2112915685 in words is "two billion, one hundred twelve million, nine hundred fifteen thousand, six hundred eighty-five".