2112724818 has 24 divisors (see below), whose sum is σ = 4578713100. Its totient is φ = 704065824.

The previous prime is 2112724787. The next prime is 2112724819. The reversal of 2112724818 is 8184272112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2112597369 + 127449 = 45963^2 + 357^2 .

It is not an unprimeable number, because it can be changed into a prime (2112724819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73948 + ... + 98456.

Almost surely, 2^2112724818 is an apocalyptic number.

2112724818 is an abundant number, since it is smaller than the sum of its proper divisors (2465988282).

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

2112724818 is a wasteful number, since it uses less digits than its factorization.

2112724818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29306 (or 29303 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 2112724818 is about 45964.3864094801. The cubic root of 2112724818 is about 1283.1604878512.

The spelling of 2112724818 in words is "two billion, one hundred twelve million, seven hundred twenty-four thousand, eight hundred eighteen".