164311897 has 2 divisors, whose sum is σ = 164311898. Its totient is φ = 164311896.

The previous prime is 164311891. The next prime is 164311921. The reversal of 164311897 is 798113461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111007296 + 53304601 = 10536^2 + 7301^2 .

It is a cyclic number.

It is not a de Polignac number, because 164311897 - 2¹⁹ = 163787609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164311891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82155948 + 82155949.

It is an arithmetic number, because the mean of its divisors is an integer number (82155949).

Almost surely, 2^164311897 is an apocalyptic number.

It is an amenable number.

164311897 is a deficient number, since it is larger than the sum of its proper divisors (1).

164311897 is an equidigital number, since it uses as much as digits as its factorization.

164311897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 164311897 is about 12818.4202224767. The cubic root of 164311897 is about 547.7171460611.

The spelling of 164311897 in words is "one hundred sixty-four million, three hundred eleven thousand, eight hundred ninety-seven".