18450899648 has 14 divisors (see below), whose sum is σ = 36613504116. Its totient is φ = 9225449792.

The previous prime is 18450899603. The next prime is 18450899669. The reversal of 18450899648 is 84699805481.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144147590 + ... + 144147717.

It is an arithmetic number, because the mean of its divisors is an integer number (2615250294).

Almost surely, 2^18450899648 is an apocalyptic number.

It is an amenable number.

18450899648 is a deficient number, since it is larger than the sum of its proper divisors (18162604468).

18450899648 is an equidigital number, since it uses as much as digits as its factorization.

18450899648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288295319 (or 288295309 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 62.

The spelling of 18450899648 in words is "eighteen billion, four hundred fifty million, eight hundred ninety-nine thousand, six hundred forty-eight".