1989698592 has 48 divisors (see below), whose sum is σ = 5969097792. Its totient is φ = 568485120.

The previous prime is 1989698591. The next prime is 1989698597. The reversal of 1989698592 is 2958969891.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1989698591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1479759 + ... + 1481102.

It is an arithmetic number, because the mean of its divisors is an integer number (124356204).

Almost surely, 2^1989698592 is an apocalyptic number.

1989698592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1989698592 is an abundant number, since it is smaller than the sum of its proper divisors (3979399200).

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

1989698592 is a wasteful number, since it uses less digits than its factorization.

1989698592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2960881 (or 2960873 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 66.

The square root of 1989698592 is about 44606.0376182418. The cubic root of 1989698592 is about 1257.7541651678.

The spelling of 1989698592 in words is "one billion, nine hundred eighty-nine million, six hundred ninety-eight thousand, five hundred ninety-two".