19390487316 has 96 divisors (see below), whose sum is σ = 48422707200. Its totient is φ = 6021607680.

The previous prime is 19390487261. The next prime is 19390487357. The reversal of 19390487316 is 61378409391.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

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, 3873271 + ... + 3878273.

It is an arithmetic number, because the mean of its divisors is an integer number (504403200).

Almost surely, 2^19390487316 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 19390487316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24211353600).

19390487316 is an abundant number, since it is smaller than the sum of its proper divisors (29032219884).

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

19390487316 is a wasteful number, since it uses less digits than its factorization.

19390487316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309 (or 5307 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 19390487316 in words is "nineteen billion, three hundred ninety million, four hundred eighty-seven thousand, three hundred sixteen".