18239036928 has 480 divisors, whose sum is σ = 60665831424. Its totient is φ = 4765630464.

The previous prime is 18239036897. The next prime is 18239036929. The reversal of 18239036928 is 82963093281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18239036929) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143614401 + ... + 143614527.

Almost surely, 2^18239036928 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 18239036928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30332915712).

18239036928 is an abundant number, since it is smaller than the sum of its proper divisors (42426794496).

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

18239036928 is a wasteful number, since it uses less digits than its factorization.

18239036928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 18239036928 in words is "eighteen billion, two hundred thirty-nine million, thirty-six thousand, nine hundred twenty-eight".