164844653 has 2 divisors, whose sum is σ = 164844654. Its totient is φ = 164844652.

The previous prime is 164844619. The next prime is 164844661. The reversal of 164844653 is 356448461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148181929 + 16662724 = 12173^2 + 4082^2 .

It is an emirp because it is prime and its reverse (356448461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164844653 - 2⁸ = 164844397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164844653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164841653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82422326 + 82422327.

It is an arithmetic number, because the mean of its divisors is an integer number (82422327).

Almost surely, 2^164844653 is an apocalyptic number.

It is an amenable number.

164844653 is a deficient number, since it is larger than the sum of its proper divisors (1).

164844653 is an equidigital number, since it uses as much as digits as its factorization.

164844653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 41.

The square root of 164844653 is about 12839.1842809425. The cubic root of 164844653 is about 548.3084702364.

The spelling of 164844653 in words is "one hundred sixty-four million, eight hundred forty-four thousand, six hundred fifty-three".