18869428224 has 168 divisors, whose sum is σ = 56533145760. Its totient is φ = 6289145856.

The previous prime is 18869428211. The next prime is 18869428349. The reversal of 18869428224 is 42282496881.

It is a Harshad number since it is a multiple of its sum of digits (54).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1985917 + ... + 1995395.

It is an arithmetic number, because the mean of its divisors is an integer number (336506820).

Almost surely, 2^18869428224 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 18869428224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28266572880).

18869428224 is an abundant number, since it is smaller than the sum of its proper divisors (37663717536).

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

18869428224 is an frugal number, since it uses more digits than its factorization.

18869428224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9520 (or 9484 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 54.

The spelling of 18869428224 in words is "eighteen billion, eight hundred sixty-nine million, four hundred twenty-eight thousand, two hundred twenty-four".