164660219 has 2 divisors, whose sum is σ = 164660220. Its totient is φ = 164660218.

The previous prime is 164660179. The next prime is 164660227. The reversal of 164660219 is 912066461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164660219 is a prime.

It is a super-2 number, since 2×164660219² = 54225975442255922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164660269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82330109 + 82330110.

It is an arithmetic number, because the mean of its divisors is an integer number (82330110).

Almost surely, 2^164660219 is an apocalyptic number.

164660219 is a deficient number, since it is larger than the sum of its proper divisors (1).

164660219 is an equidigital number, since it uses as much as digits as its factorization.

164660219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 164660219 is about 12831.9998051746. Note that the first 3 decimals coincide. The cubic root of 164660219 is about 548.1039049872.

The spelling of 164660219 in words is "one hundred sixty-four million, six hundred sixty thousand, two hundred nineteen".