1919444023194 has 16 divisors (see below), whose sum is σ = 3839196862368. Its totient is φ = 639763205072.

The previous prime is 1919444023183. The next prime is 1919444023207. The reversal of 1919444023194 is 4913204449191.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12786492 + ... + 12935735.

It is an arithmetic number, because the mean of its divisors is an integer number (239949803898).

Almost surely, 2^{1919444023194} is an apocalyptic number.

1919444023194 is an abundant number, since it is smaller than the sum of its proper divisors (1919752839174).

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

1919444023194 is a wasteful number, since it uses less digits than its factorization.

1919444023194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25734669.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 1919444023194 in words is "one trillion, nine hundred nineteen billion, four hundred forty-four million, twenty-three thousand, one hundred ninety-four".