159913 has 4 divisors (see below), whose sum is σ = 172228. Its totient is φ = 147600.

The previous prime is 159911. The next prime is 159931. The reversal of 159913 is 319951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 319951 = 31 ⋅10321.

It can be written as a sum of positive squares in 2 ways, for example, as 38809 + 121104 = 197^2 + 348^2 .

It is a cyclic number.

It is not a de Polignac number, because 159913 - 2¹ = 159911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159911) 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, 6138 + ... + 6163.

It is an arithmetic number, because the mean of its divisors is an integer number (43057).

2¹⁵⁹⁹¹³ is an apocalyptic number.

159913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

159913 is a deficient number, since it is larger than the sum of its proper divisors (12315).

159913 is a wasteful number, since it uses less digits than its factorization.

159913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12314.

The product of its digits is 1215, while the sum is 28.

The square root of 159913 is about 399.8912352128. The cubic root of 159913 is about 54.2785107840.

The spelling of 159913 in words is "one hundred fifty-nine thousand, nine hundred thirteen".