189901220032 has 28 divisors (see below), whose sum is σ = 393219377136. Its totient is φ = 90822321920.

The previous prime is 189901219987. The next prime is 189901220063. The reversal of 189901220032 is 230022109981.

189901220032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 189901219973 and 189901220000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64503019 + ... + 64505962.

Almost surely, 2^189901220032 is an apocalyptic number.

It is an amenable number.

189901220032 is an abundant number, since it is smaller than the sum of its proper divisors (203318157104).

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

189901220032 is a wasteful number, since it uses less digits than its factorization.

189901220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129009016 (or 129009006 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 189901220032 in words is "one hundred eighty-nine billion, nine hundred one million, two hundred twenty thousand, thirty-two".