1994943744 has 324 divisors, whose sum is σ = 6411797028. Its totient is φ = 594247680.

The previous prime is 1994943701. The next prime is 1994943799. The reversal of 1994943744 is 4473494991.

It can be written as a sum of positive squares in 2 ways, for example, as 1496761344 + 498182400 = 38688^2 + 22320^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37640422 + ... + 37640474.

It is an arithmetic number, because the mean of its divisors is an integer number (19789497).

Almost surely, 2^1994943744 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 1994943744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3205898514).

1994943744 is an abundant number, since it is smaller than the sum of its proper divisors (4416853284).

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

1994943744 is a wasteful number, since it uses less digits than its factorization.

1994943744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 106 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 1994943744 is about 44664.7931149356. The cubic root of 1994943744 is about 1258.8584066638.

The spelling of 1994943744 in words is "one billion, nine hundred ninety-four million, nine hundred forty-three thousand, seven hundred forty-four".