1984768544440 has 32 divisors (see below), whose sum is σ = 4871704610160. Its totient is φ = 721734016000.

The previous prime is 1984768544413. The next prime is 1984768544453. The reversal of 1984768544440 is 444458674891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255418361 + ... + 2255419240.

Almost surely, 2^{1984768544440} is an apocalyptic number.

1984768544440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1984768544440 is an abundant number, since it is smaller than the sum of its proper divisors (2886936065720).

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

1984768544440 is a wasteful number, since it uses less digits than its factorization.

1984768544440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510837623 (or 4510837619 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 64.

The spelling of 1984768544440 in words is "one trillion, nine hundred eighty-four billion, seven hundred sixty-eight million, five hundred forty-four thousand, four hundred forty".