164798219 has 2 divisors, whose sum is σ = 164798220. Its totient is φ = 164798218.

The previous prime is 164798209. The next prime is 164798237. The reversal of 164798219 is 912897461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164798219 - 2⁴ = 164798203 is a prime.

It is a super-2 number, since 2×164798219² = 54316905971143922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164798209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82399109 + 82399110.

It is an arithmetic number, because the mean of its divisors is an integer number (82399110).

Almost surely, 2^164798219 is an apocalyptic number.

164798219 is a deficient number, since it is larger than the sum of its proper divisors (1).

164798219 is an equidigital number, since it uses as much as digits as its factorization.

164798219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 164798219 is about 12837.3758611330. The cubic root of 164798219 is about 548.2569822729.

The spelling of 164798219 in words is "one hundred sixty-four million, seven hundred ninety-eight thousand, two hundred nineteen".