164218319 has 2 divisors, whose sum is σ = 164218320. Its totient is φ = 164218318.

The previous prime is 164218303. The next prime is 164218337. The reversal of 164218319 is 913812461.

It is a weak prime.

It is an emirp because it is prime and its reverse (913812461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164218319 - 2⁴ = 164218303 is a prime.

It is a super-2 number, since 2×164218319² = 53935312590371522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164218819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82109159 + 82109160.

It is an arithmetic number, because the mean of its divisors is an integer number (82109160).

Almost surely, 2^164218319 is an apocalyptic number.

164218319 is a deficient number, since it is larger than the sum of its proper divisors (1).

164218319 is an equidigital number, since it uses as much as digits as its factorization.

164218319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 164218319 is about 12814.7695648420. The cubic root of 164218319 is about 547.6131487058.

The spelling of 164218319 in words is "one hundred sixty-four million, two hundred eighteen thousand, three hundred nineteen".