18023606873 has 4 divisors (see below), whose sum is σ = 19083819060. Its totient is φ = 16963394688.

The previous prime is 18023606869. The next prime is 18023606897. The reversal of 18023606873 is 37860632081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37860632081 = 107 ⋅353837683.

It can be written as a sum of positive squares in 2 ways, for example, as 5008675984 + 13014930889 = 70772^2 + 114083^2 .

It is a cyclic number.

It is not a de Polignac number, because 18023606873 - 2² = 18023606869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18023606773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530106068 + ... + 530106101.

It is an arithmetic number, because the mean of its divisors is an integer number (4770954765).

Almost surely, 2^18023606873 is an apocalyptic number.

It is an amenable number.

18023606873 is a deficient number, since it is larger than the sum of its proper divisors (1060212187).

18023606873 is a wasteful number, since it uses less digits than its factorization.

18023606873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060212186.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 18023606873 in words is "eighteen billion, twenty-three million, six hundred six thousand, eight hundred seventy-three".