168500537 has 4 divisors (see below), whose sum is σ = 170873856. Its totient is φ = 166127220.

The previous prime is 168500533. The next prime is 168500551. The reversal of 168500537 is 735005861.

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 not a de Polignac number, because 168500537 - 2² = 168500533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168500497 and 168500506.

It is not an unprimeable number, because it can be changed into a prime (168500533) 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, 1186553 + ... + 1186694.

It is an arithmetic number, because the mean of its divisors is an integer number (42718464).

Almost surely, 2^168500537 is an apocalyptic number.

It is an amenable number.

168500537 is a deficient number, since it is larger than the sum of its proper divisors (2373319).

168500537 is an equidigital number, since it uses as much as digits as its factorization.

168500537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373318.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 168500537 is about 12980.7756701978. The cubic root of 168500537 is about 552.3322854512.

The spelling of 168500537 in words is "one hundred sixty-eight million, five hundred thousand, five hundred thirty-seven".