165344653 has 2 divisors, whose sum is σ = 165344654. Its totient is φ = 165344652.

The previous prime is 165344629. The next prime is 165344687. The reversal of 165344653 is 356443561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144432324 + 20912329 = 12018^2 + 4573^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165344653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165344693) 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, 82672326 + 82672327.

It is an arithmetic number, because the mean of its divisors is an integer number (82672327).

Almost surely, 2^165344653 is an apocalyptic number.

It is an amenable number.

165344653 is a deficient number, since it is larger than the sum of its proper divisors (1).

165344653 is an equidigital number, since it uses as much as digits as its factorization.

165344653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 37.

The square root of 165344653 is about 12858.6411801559. The cubic root of 165344653 is about 548.8622795590.

The spelling of 165344653 in words is "one hundred sixty-five million, three hundred forty-four thousand, six hundred fifty-three".