164193185 has 8 divisors (see below), whose sum is σ = 212188200. Its totient is φ = 121250304.

The previous prime is 164193179. The next prime is 164193217. The reversal of 164193185 is 581391461.

It can be written as a sum of positive squares in 4 ways, for example, as 11621281 + 152571904 = 3409^2 + 12352^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164193185 - 2⁶ = 164193121 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1262960 + ... + 1263089.

It is an arithmetic number, because the mean of its divisors is an integer number (26523525).

Almost surely, 2^164193185 is an apocalyptic number.

It is an amenable number.

164193185 is a deficient number, since it is larger than the sum of its proper divisors (47995015).

164193185 is a wasteful number, since it uses less digits than its factorization.

164193185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526067.

The product of its digits is 25920, while the sum is 38.

The square root of 164193185 is about 12813.7888620033. The cubic root of 164193185 is about 547.5852094535.

The spelling of 164193185 in words is "one hundred sixty-four million, one hundred ninety-three thousand, one hundred eighty-five".