1919000000019 has 32 divisors (see below), whose sum is σ = 2715189120000. Its totient is φ = 1202187585024.

The previous prime is 1918999999897. The next prime is 1919000000033. The reversal of 1919000000019 is 9100000009191.

It is not a de Polignac number, because 1919000000019 - 2²⁷ = 1918865782291 is a prime.

It is a super-2 number, since 2×1919000000019² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1919000000059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5949339 + ... + 6263595.

It is an arithmetic number, because the mean of its divisors is an integer number (84849660000).

Almost surely, 2^{1919000000019} is an apocalyptic number.

1919000000019 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1919000000019 is a deficient number, since it is larger than the sum of its proper divisors (796189119981).

1919000000019 is a wasteful number, since it uses less digits than its factorization.

1919000000019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315147.

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

The spelling of 1919000000019 in words is "one trillion, nine hundred nineteen billion, nineteen", and thus it is an aban number.