1988578944 has 384 divisors, whose sum is σ = 6838977600. Its totient is φ = 564019200.

The previous prime is 1988578871. The next prime is 1988578951. The reversal of 1988578944 is 4498758891.

1988578944 is a `hidden beast` number, since 19 + 8 + 8 + 578 + 9 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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, 10986534 + ... + 10986714.

Almost surely, 2^1988578944 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 1988578944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3419488800).

1988578944 is an abundant number, since it is smaller than the sum of its proper divisors (4850398656).

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

1988578944 is a wasteful number, since it uses less digits than its factorization.

1988578944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 214 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 63.

The square root of 1988578944 is about 44593.4854435040. The cubic root of 1988578944 is about 1257.5181987467.

The spelling of 1988578944 in words is "one billion, nine hundred eighty-eight million, five hundred seventy-eight thousand, nine hundred forty-four".