1944440010 has 72 divisors (see below), whose sum is σ = 5285036484. Its totient is φ = 495960960.

The previous prime is 1944439999. The next prime is 1944440011. The reversal of 1944440010 is 100444491.

It can be written as a sum of positive squares in 2 ways, for example, as 1883646801 + 60793209 = 43401^2 + 7797^2 .

It is not an unprimeable number, because it can be changed into a prime (1944440011) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27190 + ... + 68030.

Almost surely, 2^1944440010 is an apocalyptic number.

1944440010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1944440010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2642518242).

1944440010 is an abundant number, since it is smaller than the sum of its proper divisors (3340596474).

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

1944440010 is a wasteful number, since it uses less digits than its factorization.

1944440010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40900 (or 40874 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1944440010 is about 44095.8049025074. The cubic root of 1944440010 is about 1248.1444490408.

The spelling of 1944440010 in words is "one billion, nine hundred forty-four million, four hundred forty thousand, ten".