2111816688 has 40 divisors (see below), whose sum is σ = 5582404608. Its totient is φ = 687567552.

The previous prime is 2111816671. The next prime is 2111816797. The reversal of 2111816688 is 8866181112.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509520 + ... + 513647.

Almost surely, 2^2111816688 is an apocalyptic number.

It is an amenable number.

2111816688 is an abundant number, since it is smaller than the sum of its proper divisors (3470587920).

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

2111816688 is a wasteful number, since it uses less digits than its factorization.

2111816688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023221 (or 1023215 counting only the distinct ones).

The product of its digits is 36864, while the sum is 42.

The square root of 2111816688 is about 45954.5067213217. The cubic root of 2111816688 is about 1282.9766110043.

The spelling of 2111816688 in words is "two billion, one hundred eleven million, eight hundred sixteen thousand, six hundred eighty-eight".