164673329 has 4 divisors (see below), whose sum is σ = 166303860. Its totient is φ = 163042800.

The previous prime is 164673317. The next prime is 164673371. The reversal of 164673329 is 923376461.

164673329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 923376461 = 7 ⋅131910923.

It can be written as a sum of positive squares in 2 ways, for example, as 107640625 + 57032704 = 10375^2 + 7552^2 .

It is a cyclic number.

It is not a de Polignac number, because 164673329 - 2¹² = 164669233 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 (164673029) 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, 815114 + ... + 815315.

It is an arithmetic number, because the mean of its divisors is an integer number (41575965).

Almost surely, 2^164673329 is an apocalyptic number.

It is an amenable number.

164673329 is a deficient number, since it is larger than the sum of its proper divisors (1630531).

164673329 is a wasteful number, since it uses less digits than its factorization.

164673329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630530.

The product of its digits is 163296, while the sum is 41.

The square root of 164673329 is about 12832.5106273091. The cubic root of 164673329 is about 548.1184510052.

The spelling of 164673329 in words is "one hundred sixty-four million, six hundred seventy-three thousand, three hundred twenty-nine".