164465243 has 2 divisors, whose sum is σ = 164465244. Its totient is φ = 164465242.

The previous prime is 164465237. The next prime is 164465251. The reversal of 164465243 is 342564461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164465243 is a prime.

It is not a weakly prime, because it can be changed into another prime (164465263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82232621 + 82232622.

It is an arithmetic number, because the mean of its divisors is an integer number (82232622).

Almost surely, 2^164465243 is an apocalyptic number.

164465243 is a deficient number, since it is larger than the sum of its proper divisors (1).

164465243 is an equidigital number, since it uses as much as digits as its factorization.

164465243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 35.

The square root of 164465243 is about 12824.4002978697. The cubic root of 164465243 is about 547.8874808943.

The spelling of 164465243 in words is "one hundred sixty-four million, four hundred sixty-five thousand, two hundred forty-three".