164574009 has 24 divisors (see below), whose sum is σ = 246165504. Its totient is φ = 105840000.

The previous prime is 164573999. The next prime is 164574013. The reversal of 164574009 is 900475461.

164574009 is a `hidden beast` number, since 1 + 645 + 7 + 4 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 164574009 - 2¹² = 164569913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164574049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111144 + ... + 112614.

It is an arithmetic number, because the mean of its divisors is an integer number (10256896).

Almost surely, 2^164574009 is an apocalyptic number.

It is an amenable number.

164574009 is a deficient number, since it is larger than the sum of its proper divisors (81591495).

164574009 is a wasteful number, since it uses less digits than its factorization.

164574009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 164574009 is about 12828.6401851482. The cubic root of 164574009 is about 548.0082326449.

The spelling of 164574009 in words is "one hundred sixty-four million, five hundred seventy-four thousand, nine".