1988716768 has 24 divisors (see below), whose sum is σ = 3917381832. Its totient is φ = 993826176.

The previous prime is 1988716727. The next prime is 1988716771. The reversal of 1988716768 is 8676178891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47946 + ... + 79222.

It is an arithmetic number, because the mean of its divisors is an integer number (163224243).

Almost surely, 2^1988716768 is an apocalyptic number.

It is an amenable number.

1988716768 is a deficient number, since it is larger than the sum of its proper divisors (1928665064).

1988716768 is a wasteful number, since it uses less digits than its factorization.

1988716768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33274 (or 33266 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 61.

The square root of 1988716768 is about 44595.0307545583. The cubic root of 1988716768 is about 1257.5472500088.

The spelling of 1988716768 in words is "one billion, nine hundred eighty-eight million, seven hundred sixteen thousand, seven hundred sixty-eight".