1944444444444 has 36 divisors (see below), whose sum is σ = 4918577643616. Its totient is φ = 647692651008.

The previous prime is 1944444444407. The next prime is 1944444444451. The reversal of 1944444444444 is 4444444444491.

1944444444444 is a `hidden beast` number, since 194 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

1944444444444 is a modest number, since divided by 4444444 gives 194444 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18927109 + ... + 19029564.

Almost surely, 2^{1944444444444} is an apocalyptic number.

It is an amenable number.

1944444444444 is an abundant number, since it is smaller than the sum of its proper divisors (2974133199172).

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

1944444444444 is a wasteful number, since it uses less digits than its factorization.

1944444444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37958106 (or 37958101 counting only the distinct ones).

The product of its digits is 37748736, while the sum is 54.

The spelling of 1944444444444 in words is "one trillion, nine hundred forty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-four".