164445319 has 2 divisors, whose sum is σ = 164445320. Its totient is φ = 164445318.

The previous prime is 164445317. The next prime is 164445343. The reversal of 164445319 is 913544461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164445319 - 2¹ = 164445317 is a prime.

It is a super-2 number, since 2×164445319² = 54084525882023522, which contains 22 as substring.

Together with 164445317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164445311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82222659 + 82222660.

It is an arithmetic number, because the mean of its divisors is an integer number (82222660).

Almost surely, 2^164445319 is an apocalyptic number.

164445319 is a deficient number, since it is larger than the sum of its proper divisors (1).

164445319 is an equidigital number, since it uses as much as digits as its factorization.

164445319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 164445319 is about 12823.6234738860. The cubic root of 164445319 is about 547.8653555488.

The spelling of 164445319 in words is "one hundred sixty-four million, four hundred forty-five thousand, three hundred nineteen".