19404831744 has 220 divisors, whose sum is σ = 59522158344. Its totient is φ = 6292463616.

The previous prime is 19404831701. The next prime is 19404831757. The reversal of 19404831744 is 44713840491.

It is a self number, because there is not a number n which added to its sum of digits gives 19404831744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3065767 + ... + 3072089.

Almost surely, 2^19404831744 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 19404831744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29761079172).

19404831744 is an abundant number, since it is smaller than the sum of its proper divisors (40117326600).

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

19404831744 is an equidigital number, since it uses as much as digits as its factorization.

19404831744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392 (or 6365 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 19404831744 in words is "nineteen billion, four hundred four million, eight hundred thirty-one thousand, seven hundred forty-four".