19789332480 has 480 divisors, whose sum is σ = 73607788800. Its totient is φ = 5034737664.

The previous prime is 19789332467. The next prime is 19789332487. The reversal of 19789332480 is 8423398791.

19789332480 is a `hidden beast` number, since 1 + 9 + 78 + 93 + 3 + 2 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19789332487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50872126 + ... + 50872514.

It is an arithmetic number, because the mean of its divisors is an integer number (153349560).

Almost surely, 2^19789332480 is an apocalyptic number.

19789332480 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 19789332480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36803894400).

19789332480 is an abundant number, since it is smaller than the sum of its proper divisors (53818456320).

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

19789332480 is an equidigital number, since it uses as much as digits as its factorization.

19789332480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 19789332480 in words is "nineteen billion, seven hundred eighty-nine million, three hundred thirty-two thousand, four hundred eighty".