18289000448 has 38 divisors (see below), whose sum is σ = 36578455416. Its totient is φ = 9144369152.

The previous prime is 18289000417. The next prime is 18289000453. The reversal of 18289000448 is 84400098281.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18289000399 and 18289000408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227261 + ... + 297027.

It is an arithmetic number, because the mean of its divisors is an integer number (962590932).

Almost surely, 2^18289000448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18289000448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18289227708).

18289000448 is an abundant number, since it is smaller than the sum of its proper divisors (18289454968).

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

18289000448 is an frugal number, since it uses more digits than its factorization.

18289000448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69803 (or 69769 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 18289000448 in words is "eighteen billion, two hundred eighty-nine million, four hundred forty-eight", and thus it is an aban number.