19127992320 has 576 divisors, whose sum is σ = 72477296640. Its totient is φ = 4775215104.

The previous prime is 19127992313. The next prime is 19127992339. The reversal of 19127992320 is 2329972191.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 406978537 + ... + 406978583.

It is an arithmetic number, because the mean of its divisors is an integer number (125828640).

Almost surely, 2^19127992320 is an apocalyptic number.

19127992320 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 19127992320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36238648320).

19127992320 is an abundant number, since it is smaller than the sum of its proper divisors (53349304320).

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

19127992320 is an frugal number, since it uses more digits than its factorization.

19127992320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 19127992320 in words is "nineteen billion, one hundred twenty-seven million, nine hundred ninety-two thousand, three hundred twenty".