1993744044 has 144 divisors (see below), whose sum is σ = 5447909376. Its totient is φ = 636854400.

The previous prime is 1993744033. The next prime is 1993744057. The reversal of 1993744044 is 4404473991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3826504 + ... + 3827024.

It is an arithmetic number, because the mean of its divisors is an integer number (37832704).

Almost surely, 2^1993744044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1993744044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2723954688).

1993744044 is an abundant number, since it is smaller than the sum of its proper divisors (3454165332).

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

1993744044 is a wasteful number, since it uses less digits than its factorization.

1993744044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 1993744044 is about 44651.3610542837. The cubic root of 1993744044 is about 1258.6060093591.

The spelling of 1993744044 in words is "one billion, nine hundred ninety-three million, seven hundred forty-four thousand, forty-four".