165168753 has 16 divisors (see below), whose sum is σ = 233513280. Its totient is φ = 103486976.

The previous prime is 165168749. The next prime is 165168779. The reversal of 165168753 is 357861561.

It is a cyclic number.

It is not a de Polignac number, because 165168753 - 2² = 165168749 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (165168733) 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, 41818 + ... + 45596.

It is an arithmetic number, because the mean of its divisors is an integer number (14594580).

Almost surely, 2^165168753 is an apocalyptic number.

It is an amenable number.

165168753 is a deficient number, since it is larger than the sum of its proper divisors (68344527).

165168753 is a wasteful number, since it uses less digits than its factorization.

165168753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4656.

The product of its digits is 151200, while the sum is 42.

The square root of 165168753 is about 12851.7996016122. The cubic root of 165168753 is about 548.6675768990.

It can be divided in two parts, 16516875 and 3, that added together give a triangular number (16516878 = T₅₇₄₇).

The spelling of 165168753 in words is "one hundred sixty-five million, one hundred sixty-eight thousand, seven hundred fifty-three".