189633673 has 4 divisors (see below), whose sum is σ = 193668480. Its totient is φ = 185598868.

The previous prime is 189633659. The next prime is 189633679. The reversal of 189633673 is 376336981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 376336981 = 857 ⋅439133.

It is a cyclic number.

It is not a de Polignac number, because 189633673 - 2⁹ = 189633161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189633679) 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 3 ways as a sum of consecutive naturals, for example, 2017333 + ... + 2017426.

It is an arithmetic number, because the mean of its divisors is an integer number (48417120).

Almost surely, 2^189633673 is an apocalyptic number.

It is an amenable number.

189633673 is a deficient number, since it is larger than the sum of its proper divisors (4034807).

189633673 is an equidigital number, since it uses as much as digits as its factorization.

189633673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4034806.

The product of its digits is 489888, while the sum is 46.

The square root of 189633673 is about 13770.7542640191. The cubic root of 189633673 is about 574.5200006772.

The spelling of 189633673 in words is "one hundred eighty-nine million, six hundred thirty-three thousand, six hundred seventy-three".