165068437 has 2 divisors, whose sum is σ = 165068438. Its totient is φ = 165068436.

The previous prime is 165068429. The next prime is 165068471. The reversal of 165068437 is 734860561.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142420356 + 22648081 = 11934^2 + 4759^2 .

It is a cyclic number.

It is not a de Polignac number, because 165068437 - 2³ = 165068429 is a prime.

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 165068437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165068417) 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, 82534218 + 82534219.

It is an arithmetic number, because the mean of its divisors is an integer number (82534219).

Almost surely, 2^165068437 is an apocalyptic number.

It is an amenable number.

165068437 is a deficient number, since it is larger than the sum of its proper divisors (1).

165068437 is an equidigital number, since it uses as much as digits as its factorization.

165068437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 165068437 is about 12847.8962091075. The cubic root of 165068437 is about 548.5564758133.

The spelling of 165068437 in words is "one hundred sixty-five million, sixty-eight thousand, four hundred thirty-seven".