164315443 has 2 divisors, whose sum is σ = 164315444. Its totient is φ = 164315442.

The previous prime is 164315441. The next prime is 164315467. The reversal of 164315443 is 344513461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164315443 - 2¹ = 164315441 is a prime.

Together with 164315441, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (164315441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82157721 + 82157722.

It is an arithmetic number, because the mean of its divisors is an integer number (82157722).

Almost surely, 2^164315443 is an apocalyptic number.

164315443 is a deficient number, since it is larger than the sum of its proper divisors (1).

164315443 is an equidigital number, since it uses as much as digits as its factorization.

164315443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 31.

The square root of 164315443 is about 12818.5585383069. The cubic root of 164315443 is about 547.7210861106.

The spelling of 164315443 in words is "one hundred sixty-four million, three hundred fifteen thousand, four hundred forty-three".