164893273 has 4 divisors (see below), whose sum is σ = 165276288. Its totient is φ = 164510260.

The previous prime is 164893219. The next prime is 164893291. The reversal of 164893273 is 372398461.

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: 372398461 = 19 ⋅19599919.

It is a cyclic number.

It is not a de Polignac number, because 164893273 - 2²⁵ = 131338841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164893073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190861 + ... + 191722.

It is an arithmetic number, because the mean of its divisors is an integer number (41319072).

Almost surely, 2^164893273 is an apocalyptic number.

It is an amenable number.

164893273 is a deficient number, since it is larger than the sum of its proper divisors (383015).

164893273 is an equidigital number, since it uses as much as digits as its factorization.

164893273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383014.

The product of its digits is 217728, while the sum is 43.

The square root of 164893273 is about 12841.0775638184. The cubic root of 164893273 is about 548.3623717670.

The spelling of 164893273 in words is "one hundred sixty-four million, eight hundred ninety-three thousand, two hundred seventy-three".