164858669 has 2 divisors, whose sum is σ = 164858670. Its totient is φ = 164858668.

The previous prime is 164858647. The next prime is 164858677. The reversal of 164858669 is 966858461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104796169 + 60062500 = 10237^2 + 7750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164858669 is a prime.

It is a super-2 number, since 2×164858669² = 54356761488903122, which contains 22 as substring.

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 164858669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164818669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82429334 + 82429335.

It is an arithmetic number, because the mean of its divisors is an integer number (82429335).

Almost surely, 2^164858669 is an apocalyptic number.

It is an amenable number.

164858669 is a deficient number, since it is larger than the sum of its proper divisors (1).

164858669 is an equidigital number, since it uses as much as digits as its factorization.

164858669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 53.

The square root of 164858669 is about 12839.7300984094. The cubic root of 164858669 is about 548.3240098644.

The spelling of 164858669 in words is "one hundred sixty-four million, eight hundred fifty-eight thousand, six hundred sixty-nine".