1944440000 has 70 divisors (see below), whose sum is σ = 4821678444. Its totient is φ = 777760000.

The previous prime is 1944439999. The next prime is 1944440011. The reversal of 1944440000 is 444491.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15695 + ... + 64305.

Almost surely, 2^1944440000 is an apocalyptic number.

1944440000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1944440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2410839222).

1944440000 is an abundant number, since it is smaller than the sum of its proper divisors (2877238444).

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

1944440000 is an frugal number, since it uses more digits than its factorization.

1944440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48643 (or 48618 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1944440000 is about 44095.8047891180. The cubic root of 1944440000 is about 1248.1444469011.

Adding to 1944440000 its reverse (444491), we get a palindrome (1944884491).

The spelling of 1944440000 in words is "one billion, nine hundred forty-four million, four hundred forty thousand".