168323957 has 4 divisors (see below), whose sum is σ = 170454720. Its totient is φ = 166193196.

The previous prime is 168323929. The next prime is 168323963. The reversal of 168323957 is 759323861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168323957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168323927) 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 3 ways as a sum of consecutive naturals, for example, 1065263 + ... + 1065420.

It is an arithmetic number, because the mean of its divisors is an integer number (42613680).

Almost surely, 2^168323957 is an apocalyptic number.

It is an amenable number.

168323957 is a deficient number, since it is larger than the sum of its proper divisors (2130763).

168323957 is an equidigital number, since it uses as much as digits as its factorization.

168323957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130762.

The product of its digits is 272160, while the sum is 44.

The square root of 168323957 is about 12973.9722907057. The cubic root of 168323957 is about 552.1392792929.

The spelling of 168323957 in words is "one hundred sixty-eight million, three hundred twenty-three thousand, nine hundred fifty-seven".