19380235280 has 320 divisors, whose sum is σ = 56948355072. Its totient is φ = 5980815360.

The previous prime is 19380235261. The next prime is 19380235289. The reversal of 19380235280 is 8253208391.

It is a super-3 number, since 3×19380235280³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19380235289) by changing a digit.

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 in 63 ways as a sum of consecutive naturals, for example, 28626302 + ... + 28626978.

Almost surely, 2^19380235280 is an apocalyptic number.

19380235280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19380235280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28474177536).

19380235280 is an abundant number, since it is smaller than the sum of its proper divisors (37568119792).

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

19380235280 is a wasteful number, since it uses less digits than its factorization.

19380235280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 19380235280 in words is "nineteen billion, three hundred eighty million, two hundred thirty-five thousand, two hundred eighty".