164442163 has 2 divisors, whose sum is σ = 164442164. Its totient is φ = 164442162.

The previous prime is 164442149. The next prime is 164442181. The reversal of 164442163 is 361244461.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164442163 is a prime.

It is not a weakly prime, because it can be changed into another prime (164445163) 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, 82221081 + 82221082.

It is an arithmetic number, because the mean of its divisors is an integer number (82221082).

Almost surely, 2^164442163 is an apocalyptic number.

164442163 is a deficient number, since it is larger than the sum of its proper divisors (1).

164442163 is an equidigital number, since it uses as much as digits as its factorization.

164442163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 164442163 is about 12823.5004191523. The cubic root of 164442163 is about 547.8618506874.

The spelling of 164442163 in words is "one hundred sixty-four million, four hundred forty-two thousand, one hundred sixty-three".