18704311112 has 16 divisors (see below), whose sum is σ = 35181220860. Its totient is φ = 9322652224.

The previous prime is 18704310997. The next prime is 18704311117. The reversal of 18704311112 is 21111340781.

It can be written as a sum of positive squares in 2 ways, for example, as 13163890756 + 5540420356 = 114734^2 + 74434^2 .

It is not an unprimeable number, because it can be changed into a prime (18704311117) 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, 3685223 + ... + 3690294.

Almost surely, 2^18704311112 is an apocalyptic number.

It is an amenable number.

18704311112 is a deficient number, since it is larger than the sum of its proper divisors (16476909748).

18704311112 is a wasteful number, since it uses less digits than its factorization.

18704311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375840 (or 7375836 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 29.

Adding to 18704311112 its reverse (21111340781), we get a palindrome (39815651893).

The spelling of 18704311112 in words is "eighteen billion, seven hundred four million, three hundred eleven thousand, one hundred twelve".