164585219 has 2 divisors, whose sum is σ = 164585220. Its totient is φ = 164585218.

The previous prime is 164585207. The next prime is 164585227. The reversal of 164585219 is 912585461.

It is a strong prime.

It is an emirp because it is prime and its reverse (912585461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164585219 - 2⁸ = 164584963 is a prime.

It is a super-2 number, since 2×164585219² = 54176588626555922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164585249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82292609 + 82292610.

It is an arithmetic number, because the mean of its divisors is an integer number (82292610).

Almost surely, 2^164585219 is an apocalyptic number.

164585219 is a deficient number, since it is larger than the sum of its proper divisors (1).

164585219 is an equidigital number, since it uses as much as digits as its factorization.

164585219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 41.

The square root of 164585219 is about 12829.0770907342. The cubic root of 164585219 is about 548.0206749352.

The spelling of 164585219 in words is "one hundred sixty-four million, five hundred eighty-five thousand, two hundred nineteen".