19506347872 has 96 divisors (see below), whose sum is σ = 44596137600. Its totient is φ = 8305228800.

The previous prime is 19506347869. The next prime is 19506347897. The reversal of 19506347872 is 27874360591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 578847 + ... + 611617.

It is an arithmetic number, because the mean of its divisors is an integer number (464543100).

It is a 1-persistent number, because it is pandigital, but 2⋅19506347872 = 39012695744 is not.

Almost surely, 2^19506347872 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 19506347872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22298068800).

19506347872 is an abundant number, since it is smaller than the sum of its proper divisors (25089789728).

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

19506347872 is a wasteful number, since it uses less digits than its factorization.

19506347872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32900 (or 32892 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 19506347872 in words is "nineteen billion, five hundred six million, three hundred forty-seven thousand, eight hundred seventy-two".