1989403832 has 32 divisors (see below), whose sum is σ = 4019032080. Its totient is φ = 917736960.

The previous prime is 1989403789. The next prime is 1989403853. The reversal of 1989403832 is 2383049891.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 309968 + ... + 316320.

Almost surely, 2^1989403832 is an apocalyptic number.

It is an amenable number.

1989403832 is an abundant number, since it is smaller than the sum of its proper divisors (2029628248).

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

1989403832 is a wasteful number, since it uses less digits than its factorization.

1989403832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9383 (or 9379 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1989403832 is about 44602.7334588364. The cubic root of 1989403832 is about 1257.6920529250.

The spelling of 1989403832 in words is "one billion, nine hundred eighty-nine million, four hundred three thousand, eight hundred thirty-two".