18485243456 has 28 divisors (see below), whose sum is σ = 37864938240. Its totient is φ = 8944471680.

The previous prime is 18485243429. The next prime is 18485243473. The reversal of 18485243456 is 65434258481.

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, 4656596 + ... + 4660563.

Almost surely, 2^18485243456 is an apocalyptic number.

18485243456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18485243456 is an abundant number, since it is smaller than the sum of its proper divisors (19379694784).

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

18485243456 is an equidigital number, since it uses as much as digits as its factorization.

18485243456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9317202 (or 9317192 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 50.

The spelling of 18485243456 in words is "eighteen billion, four hundred eighty-five million, two hundred forty-three thousand, four hundred fifty-six".