189082121 has 6 divisors (see below), whose sum is σ = 189724170. Its totient is φ = 188442128.

The previous prime is 189082087. The next prime is 189082123. The reversal of 189082121 is 121280981.

It can be written as a sum of positive squares in only one way, i.e., 179694025 + 9388096 = 13405^2 + 3064^2 .

It is not a de Polignac number, because 189082121 - 2¹⁰ = 189081097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189082123) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 146045 + ... + 147333.

It is an arithmetic number, because the mean of its divisors is an integer number (31620695).

Almost surely, 2^189082121 is an apocalyptic number.

It is an amenable number.

189082121 is a deficient number, since it is larger than the sum of its proper divisors (642049).

189082121 is an frugal number, since it uses more digits than its factorization.

189082121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 1672 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 189082121 is about 13750.7134723984. The cubic root of 189082121 is about 573.9624601623.

The spelling of 189082121 in words is "one hundred eighty-nine million, eighty-two thousand, one hundred twenty-one".