165996343 has 2 divisors, whose sum is σ = 165996344. Its totient is φ = 165996342.

The previous prime is 165996287. The next prime is 165996349. The reversal of 165996343 is 343699561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165996343 - 2⁹ = 165995831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165996293 and 165996302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165996349) 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, 82998171 + 82998172.

It is an arithmetic number, because the mean of its divisors is an integer number (82998172).

Almost surely, 2^165996343 is an apocalyptic number.

165996343 is a deficient number, since it is larger than the sum of its proper divisors (1).

165996343 is an equidigital number, since it uses as much as digits as its factorization.

165996343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 524880, while the sum is 46.

The square root of 165996343 is about 12883.9568068199. The cubic root of 165996343 is about 549.5824301612.

The spelling of 165996343 in words is "one hundred sixty-five million, nine hundred ninety-six thousand, three hundred forty-three".