18573873796 has 27 divisors (see below), whose sum is σ = 32940737893. Its totient is φ = 9163870640.

The previous prime is 18573873781. The next prime is 18573873809. The reversal of 18573873796 is 69737837581.

The square root of 18573873796 is 136286.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5071433796 + 13502440000 = 71214^2 + 116200^2 .

It is a super-3 number, since 3×18573873796³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22623066 + ... + 22623886.

Almost surely, 2^18573873796 is an apocalyptic number.

18573873796 is the 136286-th square number.

It is an amenable number.

18573873796 is a deficient number, since it is larger than the sum of its proper divisors (14366864097).

18573873796 is an frugal number, since it uses more digits than its factorization.

18573873796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 906 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 64.

Multiplying 18573873796 by its sum of digits (64), we get a square (1188727922944 = 1090288²).

The spelling of 18573873796 in words is "eighteen billion, five hundred seventy-three million, eight hundred seventy-three thousand, seven hundred ninety-six".