189630273 has 32 divisors (see below), whose sum is σ = 295695360. Its totient is φ = 105860160.

The previous prime is 189630271. The next prime is 189630299. The reversal of 189630273 is 372036981.

It is not a de Polignac number, because 189630273 - 2¹ = 189630271 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189630271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 228886 + ... + 229712.

It is an arithmetic number, because the mean of its divisors is an integer number (9240480).

Almost surely, 2^189630273 is an apocalyptic number.

It is an amenable number.

189630273 is a deficient number, since it is larger than the sum of its proper divisors (106065087).

189630273 is a wasteful number, since it uses less digits than its factorization.

189630273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 189630273 is about 13770.6308134377. The cubic root of 189630273 is about 574.5165670752.

The spelling of 189630273 in words is "one hundred eighty-nine million, six hundred thirty thousand, two hundred seventy-three".