165168693 has 16 divisors (see below), whose sum is σ = 245024640. Its totient is φ = 109963872.

The previous prime is 165168683. The next prime is 165168701. The reversal of 165168693 is 396861561.

It is not a de Polignac number, because 165168693 - 2²⁵ = 131614261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165168613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18505 + ... + 25937.

It is an arithmetic number, because the mean of its divisors is an integer number (15314040).

Almost surely, 2^165168693 is an apocalyptic number.

It is an amenable number.

165168693 is a deficient number, since it is larger than the sum of its proper divisors (79855947).

165168693 is an equidigital number, since it uses as much as digits as its factorization.

165168693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265 (or 8259 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 165168693 is about 12851.7972673086. The cubic root of 165168693 is about 548.6675104618.

The spelling of 165168693 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, six hundred ninety-three".