1944100140 has 96 divisors (see below), whose sum is σ = 5815729920. Its totient is φ = 483791616.

The previous prime is 1944100111. The next prime is 1944100153. The reversal of 1944100140 is 410014491.

It is a self number, because there is not a number n which added to its sum of digits gives 1944100140.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63654 + ... + 89106.

It is an arithmetic number, because the mean of its divisors is an integer number (60580520).

Almost surely, 2^1944100140 is an apocalyptic number.

1944100140 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 1944100140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2907864960).

1944100140 is an abundant number, since it is smaller than the sum of its proper divisors (3871629780).

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

1944100140 is a wasteful number, since it uses less digits than its factorization.

1944100140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25551 (or 25549 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1944100140 is about 44091.9509661344. The cubic root of 1944100140 is about 1248.0717234626.

The spelling of 1944100140 in words is "one billion, nine hundred forty-four million, one hundred thousand, one hundred forty".