18112453608 has 32 divisors (see below), whose sum is σ = 47664352800. Its totient is φ = 5719722048.

The previous prime is 18112453573. The next prime is 18112453637. The reversal of 18112453608 is 80635421181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19859691 + ... + 19860602.

It is an arithmetic number, because the mean of its divisors is an integer number (1489511025).

Almost surely, 2^18112453608 is an apocalyptic number.

It is an amenable number.

18112453608 is an abundant number, since it is smaller than the sum of its proper divisors (29551899192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18112453608 is a wasteful number, since it uses less digits than its factorization.

18112453608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39720321 (or 39720317 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

Adding to 18112453608 its reverse (80635421181), we get a palindrome (98747874789).

The spelling of 18112453608 in words is "eighteen billion, one hundred twelve million, four hundred fifty-three thousand, six hundred eight".