189893273 has 4 divisors (see below), whose sum is σ = 190206720. Its totient is φ = 189579828.

The previous prime is 189893251. The next prime is 189893303. The reversal of 189893273 is 372398981.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 189893273 - 2¹⁰ = 189892249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189893233) 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, 155813 + ... + 157026.

It is an arithmetic number, because the mean of its divisors is an integer number (47551680).

Almost surely, 2^189893273 is an apocalyptic number.

It is an amenable number.

189893273 is a deficient number, since it is larger than the sum of its proper divisors (313447).

189893273 is an equidigital number, since it uses as much as digits as its factorization.

189893273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313446.

The product of its digits is 653184, while the sum is 50.

The square root of 189893273 is about 13780.1768130892. The cubic root of 189893273 is about 574.7820451825.

The spelling of 189893273 in words is "one hundred eighty-nine million, eight hundred ninety-three thousand, two hundred seventy-three".