168493 has 6 divisors (see below), whose sum is σ = 182634. Its totient is φ = 155376.

The previous prime is 168491. The next prime is 168499. The reversal of 168493 is 394861.

It can be written as a sum of positive squares in 3 ways, for example, as 6889 + 161604 = 83^2 + 402^2 .

It is not a de Polignac number, because 168493 - 2¹ = 168491 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 (168491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 330 + ... + 667.

It is an arithmetic number, because the mean of its divisors is an integer number (30439).

2¹⁶⁸⁴⁹³ is an apocalyptic number.

168493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

168493 is a deficient number, since it is larger than the sum of its proper divisors (14141).

168493 is an equidigital number, since it uses as much as digits as its factorization.

168493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1010 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 168493 is about 410.4789885000. The cubic root of 168493 is about 55.2324050086.

The spelling of 168493 in words is "one hundred sixty-eight thousand, four hundred ninety-three".