164767871 has 2 divisors, whose sum is σ = 164767872. Its totient is φ = 164767870.

The previous prime is 164767861. The next prime is 164767891. The reversal of 164767871 is 178767461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164767871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164767861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82383935 + 82383936.

It is an arithmetic number, because the mean of its divisors is an integer number (82383936).

Almost surely, 2^164767871 is an apocalyptic number.

164767871 is a deficient number, since it is larger than the sum of its proper divisors (1).

164767871 is an equidigital number, since it uses as much as digits as its factorization.

164767871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 395136, while the sum is 47.

The square root of 164767871 is about 12836.1937894377. The cubic root of 164767871 is about 548.2233259133.

The spelling of 164767871 in words is "one hundred sixty-four million, seven hundred sixty-seven thousand, eight hundred seventy-one".