168165353 has 2 divisors, whose sum is σ = 168165354. Its totient is φ = 168165352.

The previous prime is 168165341. The next prime is 168165367. The reversal of 168165353 is 353561861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154828249 + 13337104 = 12443^2 + 3652^2 .

It is a cyclic number.

It is not a de Polignac number, because 168165353 - 2⁴ = 168165337 is a prime.

It is a super-2 number, since 2×168165353² = 56559171899229218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (168165323) 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, 84082676 + 84082677.

It is an arithmetic number, because the mean of its divisors is an integer number (84082677).

Almost surely, 2^168165353 is an apocalyptic number.

It is an amenable number.

168165353 is a deficient number, since it is larger than the sum of its proper divisors (1).

168165353 is an equidigital number, since it uses as much as digits as its factorization.

168165353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 38.

The square root of 168165353 is about 12967.8584585120. The cubic root of 168165353 is about 551.9658062292.

The spelling of 168165353 in words is "one hundred sixty-eight million, one hundred sixty-five thousand, three hundred fifty-three".