189544992 has 144 divisors (see below), whose sum is σ = 616109760. Its totient is φ = 49959936.

The previous prime is 189544981. The next prime is 189545003. The reversal of 189544992 is 299445981.

It is an interprime number because it is at equal distance from previous prime (189544981) and next prime (189545003).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112734 + ... + 114402.

It is an arithmetic number, because the mean of its divisors is an integer number (4278540).

Almost surely, 2^189544992 is an apocalyptic number.

189544992 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 189544992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308054880).

189544992 is an abundant number, since it is smaller than the sum of its proper divisors (426564768).

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

189544992 is a wasteful number, since it uses less digits than its factorization.

189544992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715 (or 1694 counting only the distinct ones).

The product of its digits is 933120, while the sum is 51.

The square root of 189544992 is about 13767.5339839784. The cubic root of 189544992 is about 574.4304298195.

The spelling of 189544992 in words is "one hundred eighty-nine million, five hundred forty-four thousand, nine hundred ninety-two".