169013 has 4 divisors (see below), whose sum is σ = 182028. Its totient is φ = 156000.

The previous prime is 169009. The next prime is 169019. The reversal of 169013 is 310961.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10609 + 158404 = 103^2 + 398^2 .

It is not a de Polignac number, because 169013 - 2² = 169009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6488 + ... + 6513.

It is an arithmetic number, because the mean of its divisors is an integer number (45507).

2¹⁶⁹⁰¹³ is an apocalyptic number.

169013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

169013 is a deficient number, since it is larger than the sum of its proper divisors (13015).

169013 is a wasteful number, since it uses less digits than its factorization.

169013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13014.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 169013 is about 411.1119069061. Note that the first 3 decimals coincide. The cubic root of 169013 is about 55.2891657350.

Adding to 169013 its reverse (310961), we get a palindrome (479974).

The spelling of 169013 in words is "one hundred sixty-nine thousand, thirteen".