18873539162 has 32 divisors (see below), whose sum is σ = 30144593232. Its totient is φ = 8831709184.

The previous prime is 18873539149. The next prime is 18873539177. The reversal of 18873539162 is 26193537881.

It is a Cunningham number, because it is equal to 137381²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 3832724281 + 15040814881 = 61909^2 + 122641^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9449948 + ... + 9451944.

Almost surely, 2^18873539162 is an apocalyptic number.

18873539162 is a deficient number, since it is larger than the sum of its proper divisors (11271054070).

18873539162 is a wasteful number, since it uses less digits than its factorization.

18873539162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442.

The product of its digits is 2177280, while the sum is 53.

The spelling of 18873539162 in words is "eighteen billion, eight hundred seventy-three million, five hundred thirty-nine thousand, one hundred sixty-two".