1989514032 has 160 divisors (see below), whose sum is σ = 5826484224. Its totient is φ = 579532800.

The previous prime is 1989514031. The next prime is 1989514069. The reversal of 1989514032 is 2304159891.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1989514031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3224188 + ... + 3224804.

Almost surely, 2^1989514032 is an apocalyptic number.

1989514032 is a gapful number since it is divisible by the number (12) 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 1989514032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2913242112).

1989514032 is an abundant number, since it is smaller than the sum of its proper divisors (3836970192).

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

1989514032 is a wasteful number, since it uses less digits than its factorization.

1989514032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1989514032 is about 44603.9687920257. The cubic root of 1989514032 is about 1257.7152751424.

The spelling of 1989514032 in words is "one billion, nine hundred eighty-nine million, five hundred fourteen thousand, thirty-two".