164243243 has 2 divisors, whose sum is σ = 164243244. Its totient is φ = 164243242.

The previous prime is 164243227. The next prime is 164243251. The reversal of 164243243 is 342342461.

164243243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164243243 - 2⁴ = 164243227 is a prime.

It is not a weakly prime, because it can be changed into another prime (164243203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82121621 + 82121622.

It is an arithmetic number, because the mean of its divisors is an integer number (82121622).

Almost surely, 2^164243243 is an apocalyptic number.

164243243 is a deficient number, since it is larger than the sum of its proper divisors (1).

164243243 is an equidigital number, since it uses as much as digits as its factorization.

164243243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 29.

The square root of 164243243 is about 12815.7419995879. The cubic root of 164243243 is about 547.6408517046.

The spelling of 164243243 in words is "one hundred sixty-four million, two hundred forty-three thousand, two hundred forty-three".