18028723882 has 16 divisors (see below), whose sum is σ = 29215208232. Its totient is φ = 8294696640.

The previous prime is 18028723871. The next prime is 18028723883. The reversal of 18028723882 is 28832782081.

It can be written as a sum of positive squares in 4 ways, for example, as 11861605921 + 6167117961 = 108911^2 + 78531^2 .

It is not an unprimeable number, because it can be changed into a prime (18028723883) 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 7 ways as a sum of consecutive naturals, for example, 1085469 + ... + 1101952.

Almost surely, 2^18028723882 is an apocalyptic number.

18028723882 is a deficient number, since it is larger than the sum of its proper divisors (11186484350).

18028723882 is a wasteful number, since it uses less digits than its factorization.

18028723882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2187753.

The product of its (nonzero) digits is 688128, while the sum is 49.

The spelling of 18028723882 in words is "eighteen billion, twenty-eight million, seven hundred twenty-three thousand, eight hundred eighty-two".