1919827138844 has 6 divisors (see below), whose sum is σ = 3359697492984. Its totient is φ = 959913569420.

The previous prime is 1919827138753. The next prime is 1919827138877. The reversal of 1919827138844 is 4488317289191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239978392352 + ... + 239978392359.

It is an arithmetic number, because the mean of its divisors is an integer number (559949582164).

Almost surely, 2^{1919827138844} is an apocalyptic number.

It is an amenable number.

1919827138844 is a deficient number, since it is larger than the sum of its proper divisors (1439870354140).

1919827138844 is a wasteful number, since it uses less digits than its factorization.

1919827138844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479956784715 (or 479956784713 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 65.

The spelling of 1919827138844 in words is "one trillion, nine hundred nineteen billion, eight hundred twenty-seven million, one hundred thirty-eight thousand, eight hundred forty-four".