164518897 has 2 divisors, whose sum is σ = 164518898. Its totient is φ = 164518896.

The previous prime is 164518787. The next prime is 164518957. The reversal of 164518897 is 798815461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84934656 + 79584241 = 9216^2 + 8921^2 .

It is a cyclic number.

It is not a de Polignac number, because 164518897 - 2²⁷ = 30301169 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164518897.

It is not a weakly prime, because it can be changed into another prime (164518097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82259448 + 82259449.

It is an arithmetic number, because the mean of its divisors is an integer number (82259449).

Almost surely, 2^164518897 is an apocalyptic number.

It is an amenable number.

164518897 is a deficient number, since it is larger than the sum of its proper divisors (1).

164518897 is an equidigital number, since it uses as much as digits as its factorization.

164518897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 49.

The square root of 164518897 is about 12826.4919989840. The cubic root of 164518897 is about 547.9470540869.

The spelling of 164518897 in words is "one hundred sixty-four million, five hundred eighteen thousand, eight hundred ninety-seven".