18852811688 has 16 divisors (see below), whose sum is σ = 35351546580. Its totient is φ = 9425732608.

The previous prime is 18852811669. The next prime is 18852811697. The reversal of 18852811688 is 88611825881.

It can be written as a sum of positive squares in 2 ways, for example, as 13037529124 + 5815282564 = 114182^2 + 76258^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 46856 + ... + 199752.

Almost surely, 2^18852811688 is an apocalyptic number.

It is an amenable number.

18852811688 is a deficient number, since it is larger than the sum of its proper divisors (16498734892).

18852811688 is a wasteful number, since it uses less digits than its factorization.

18852811688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168316 (or 168312 counting only the distinct ones).

The product of its digits is 1966080, while the sum is 56.

The spelling of 18852811688 in words is "eighteen billion, eight hundred fifty-two million, eight hundred eleven thousand, six hundred eighty-eight".