1944628444 has 12 divisors (see below), whose sum is σ = 3712472568. Its totient is φ = 883922000.

The previous prime is 1944628421. The next prime is 1944628451. The reversal of 1944628444 is 4448264491.

It is a super-2 number, since 2×1944628444² = 7563159570427722272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1944628394 and 1944628403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22098007 + ... + 22098094.

It is an arithmetic number, because the mean of its divisors is an integer number (309372714).

Almost surely, 2^1944628444 is an apocalyptic number.

It is an amenable number.

1944628444 is a deficient number, since it is larger than the sum of its proper divisors (1767844124).

1944628444 is a wasteful number, since it uses less digits than its factorization.

1944628444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44196116 (or 44196114 counting only the distinct ones).

The product of its digits is 884736, while the sum is 46.

The square root of 1944628444 is about 44097.9414939065. The cubic root of 1944628444 is about 1248.1847666049.

The spelling of 1944628444 in words is "one billion, nine hundred forty-four million, six hundred twenty-eight thousand, four hundred forty-four".