18448833648 has 40 divisors (see below), whose sum is σ = 54467986048. Its totient is φ = 5271095232.

The previous prime is 18448833643. The next prime is 18448833703. The reversal of 18448833648 is 84633884481.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18448833643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27453286 + ... + 27453957.

Almost surely, 2^18448833648 is an apocalyptic number.

It is an amenable number.

18448833648 is an abundant number, since it is smaller than the sum of its proper divisors (36019152400).

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

18448833648 is a wasteful number, since it uses less digits than its factorization.

18448833648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54907261 (or 54907255 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 57.

The spelling of 18448833648 in words is "eighteen billion, four hundred forty-eight million, eight hundred thirty-three thousand, six hundred forty-eight".