1989533376 has 168 divisors, whose sum is σ = 5978046464. Its totient is φ = 631825920.

The previous prime is 1989533369. The next prime is 1989533423. The reversal of 1989533376 is 6733359891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1195521 + ... + 1197183.

Almost surely, 2^1989533376 is an apocalyptic number.

1989533376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989533376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2989023232).

1989533376 is an abundant number, since it is smaller than the sum of its proper divisors (3988513088).

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

1989533376 is a wasteful number, since it uses less digits than its factorization.

1989533376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779 (or 1766 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The square root of 1989533376 is about 44604.1856331892. The cubic root of 1989533376 is about 1257.7193513750.

The spelling of 1989533376 in words is "one billion, nine hundred eighty-nine million, five hundred thirty-three thousand, three hundred seventy-six".