164544871 has 2 divisors, whose sum is σ = 164544872. Its totient is φ = 164544870.

The previous prime is 164544827. The next prime is 164544893. The reversal of 164544871 is 178445461.

It is a strong prime.

It is an emirp because it is prime and its reverse (178445461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164544871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164544271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82272435 + 82272436.

It is an arithmetic number, because the mean of its divisors is an integer number (82272436).

Almost surely, 2^164544871 is an apocalyptic number.

164544871 is a deficient number, since it is larger than the sum of its proper divisors (1).

164544871 is an equidigital number, since it uses as much as digits as its factorization.

164544871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 164544871 is about 12827.5044728115. The cubic root of 164544871 is about 547.9758889262.

The spelling of 164544871 in words is "one hundred sixty-four million, five hundred forty-four thousand, eight hundred seventy-one".