164243179 has 2 divisors, whose sum is σ = 164243180. Its totient is φ = 164243178.

The previous prime is 164243173. The next prime is 164243203. The reversal of 164243179 is 971342461.

It is a weak prime.

It is an emirp because it is prime and its reverse (971342461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164243179 is a prime.

It is not a weakly prime, because it can be changed into another prime (164243173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82121589 + 82121590.

It is an arithmetic number, because the mean of its divisors is an integer number (82121590).

Almost surely, 2^164243179 is an apocalyptic number.

164243179 is a deficient number, since it is larger than the sum of its proper divisors (1).

164243179 is an equidigital number, since it uses as much as digits as its factorization.

164243179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 164243179 is about 12815.7395026584. The cubic root of 164243179 is about 547.6407805722.

The spelling of 164243179 in words is "one hundred sixty-four million, two hundred forty-three thousand, one hundred seventy-nine".