189028221984 has 144 divisors (see below), whose sum is σ = 626879635200. Its totient is φ = 54008035200.

The previous prime is 189028221959. The next prime is 189028222003. The reversal of 189028221984 is 489122820981.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 189028221984.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 857992 + ... + 1055559.

It is an arithmetic number, because the mean of its divisors is an integer number (4353330800).

Almost surely, 2^189028221984 is an apocalyptic number.

189028221984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189028221984 is an abundant number, since it is smaller than the sum of its proper divisors (437851413216).

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

189028221984 is a wasteful number, since it uses less digits than its factorization.

189028221984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913588 (or 1913563 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 54.

The spelling of 189028221984 in words is "one hundred eighty-nine billion, twenty-eight million, two hundred twenty-one thousand, nine hundred eighty-four".