18111811082 has 8 divisors (see below), whose sum is σ = 27408139236. Its totient is φ = 8975764672.

The previous prime is 18111811057. The next prime is 18111811093. The reversal of 18111811082 is 28011811181.

It can be written as a sum of positive squares in 2 ways, for example, as 18106662721 + 5148361 = 134561^2 + 2269^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40070153 + ... + 40070604.

Almost surely, 2^18111811082 is an apocalyptic number.

18111811082 is a deficient number, since it is larger than the sum of its proper divisors (9296328154).

18111811082 is a wasteful number, since it uses less digits than its factorization.

18111811082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80140872.

The product of its (nonzero) digits is 1024, while the sum is 32.

Subtracting 18111811082 from its reverse (28011811181), we obtain a palindrome (9900000099).

The spelling of 18111811082 in words is "eighteen billion, one hundred eleven million, eight hundred eleven thousand, eighty-two".