1989498048 has 112 divisors (see below), whose sum is σ = 5373599616. Its totient is φ = 649492480.

The previous prime is 1989498031. The next prime is 1989498073. The reversal of 1989498048 is 8408949891.

It is a junction number, because it is equal to n+sod(n) for n = 1989497982 and 1989498000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2087140 + ... + 2088092.

It is an arithmetic number, because the mean of its divisors is an integer number (47978568).

Almost surely, 2^1989498048 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 1989498048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2686799808).

1989498048 is an abundant number, since it is smaller than the sum of its proper divisors (3384101568).

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

1989498048 is a wasteful number, since it uses less digits than its factorization.

1989498048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 60.

The square root of 1989498048 is about 44603.7896147850. The cubic root of 1989498048 is about 1257.7119069204.

The spelling of 1989498048 in words is "one billion, nine hundred eighty-nine million, four hundred ninety-eight thousand, forty-eight".