19325730816 has 360 divisors, whose sum is σ = 66278466240. Its totient is φ = 5451743232.

The previous prime is 19325730793. The next prime is 19325730821. The reversal of 19325730816 is 61803752391.

19325730816 is a `hidden beast` number, since 1 + 9 + 325 + 7 + 308 + 16 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 244629465 + ... + 244629543.

Almost surely, 2^19325730816 is an apocalyptic number.

19325730816 is a gapful number since it is divisible by the number (16) 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 19325730816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33139233120).

19325730816 is an abundant number, since it is smaller than the sum of its proper divisors (46952735424).

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

19325730816 is an frugal number, since it uses more digits than its factorization.

19325730816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 19325730816 in words is "nineteen billion, three hundred twenty-five million, seven hundred thirty thousand, eight hundred sixteen".