1944389955 has 16 divisors (see below), whose sum is σ = 3148508160. Its totient is φ = 1024513248.

The previous prime is 1944389921. The next prime is 1944389971. The reversal of 1944389955 is 5599834491.

It is not a de Polignac number, because 1944389955 - 2⁶ = 1944389891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1944389895 and 1944389904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779635 + ... + 782124.

It is an arithmetic number, because the mean of its divisors is an integer number (196781760).

Almost surely, 2^1944389955 is an apocalyptic number.

1944389955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1944389955 is a deficient number, since it is larger than the sum of its proper divisors (1204118205).

1944389955 is a wasteful number, since it uses less digits than its factorization.

1944389955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561850.

The product of its digits is 6998400, while the sum is 57.

The square root of 1944389955 is about 44095.2373278566. The cubic root of 1944389955 is about 1248.1337387752.

The spelling of 1944389955 in words is "one billion, nine hundred forty-four million, three hundred eighty-nine thousand, nine hundred fifty-five".