165434843 has 16 divisors (see below), whose sum is σ = 200160000. Its totient is φ = 133568352.

The previous prime is 165434833. The next prime is 165434861. The reversal of 165434843 is 348434561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 165434843 - 2⁸ = 165434587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165434797 and 165434806.

It is not an unprimeable number, because it can be changed into a prime (165434833) 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 in 15 ways as a sum of consecutive naturals, for example, 20333 + ... + 27281.

It is an arithmetic number, because the mean of its divisors is an integer number (12510000).

Almost surely, 2^165434843 is an apocalyptic number.

165434843 is a deficient number, since it is larger than the sum of its proper divisors (34725157).

165434843 is a wasteful number, since it uses less digits than its factorization.

165434843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154.

The product of its digits is 138240, while the sum is 38.

The square root of 165434843 is about 12862.1476822496. The cubic root of 165434843 is about 548.9620567825.

The spelling of 165434843 in words is "one hundred sixty-five million, four hundred thirty-four thousand, eight hundred forty-three".