19019000019 has 16 divisors (see below), whose sum is σ = 28263530880. Its totient is φ = 11305411200.

The previous prime is 19019000017. The next prime is 19019000027. The reversal of 19019000019 is 91000091091.

It is not a de Polignac number, because 19019000019 - 2¹ = 19019000017 is a prime.

It is a super-2 number, since 2×19019000019² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19019000019.

It is not an unprimeable number, because it can be changed into a prime (19019000017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9812757 + ... + 9814694.

It is an arithmetic number, because the mean of its divisors is an integer number (1766470680).

Almost surely, 2^19019000019 is an apocalyptic number.

19019000019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19019000019 is a deficient number, since it is larger than the sum of its proper divisors (9244530861).

19019000019 is a wasteful number, since it uses less digits than its factorization.

19019000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19627490.

The product of its (nonzero) digits is 729, while the sum is 30.

The spelling of 19019000019 in words is "nineteen billion, nineteen million, nineteen", and thus it is an aban number and an uban number.