168137 has 4 divisors (see below), whose sum is σ = 168960. Its totient is φ = 167316.

The previous prime is 168127. The next prime is 168143. The reversal of 168137 is 731861.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 168137 - 2¹⁰ = 167113 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 168137.

It is not an unprimeable number, because it can be changed into a prime (168127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164 + ... + 602.

It is an arithmetic number, because the mean of its divisors is an integer number (42240).

2¹⁶⁸¹³⁷ is an apocalyptic number.

It is an amenable number.

168137 is a deficient number, since it is larger than the sum of its proper divisors (823).

168137 is an equidigital number, since it uses as much as digits as its factorization.

168137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822.

The product of its digits is 1008, while the sum is 26.

The square root of 168137 is about 410.0451194686. The cubic root of 168137 is about 55.1934783656.

Adding to 168137 its reverse (731861), we get a palindrome (899998).

The spelling of 168137 in words is "one hundred sixty-eight thousand, one hundred thirty-seven".