164009071 has 2 divisors, whose sum is σ = 164009072. Its totient is φ = 164009070.

The previous prime is 164009059. The next prime is 164009117. The reversal of 164009071 is 170900461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164009071 - 2⁵ = 164009039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164009011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82004535 + 82004536.

It is an arithmetic number, because the mean of its divisors is an integer number (82004536).

Almost surely, 2^164009071 is an apocalyptic number.

164009071 is a deficient number, since it is larger than the sum of its proper divisors (1).

164009071 is an equidigital number, since it uses as much as digits as its factorization.

164009071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 164009071 is about 12806.6026330171. The cubic root of 164009071 is about 547.3804591568.

The spelling of 164009071 in words is "one hundred sixty-four million, nine thousand, seventy-one".