19030439168 has 72 divisors (see below), whose sum is σ = 41221805856. Its totient is φ = 8716032000.

The previous prime is 19030439161. The next prime is 19030439209. The reversal of 19030439168 is 86193403091.

It is a super-2 number, since 2×19030439168² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19030439161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414143 + ... + 457793.

Almost surely, 2^19030439168 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 19030439168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20610902928).

19030439168 is an abundant number, since it is smaller than the sum of its proper divisors (22191366688).

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

19030439168 is a wasteful number, since it uses less digits than its factorization.

19030439168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43811 (or 43797 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 19030439168 in words is "nineteen billion, thirty million, four hundred thirty-nine thousand, one hundred sixty-eight".