158169 has 8 divisors (see below), whose sum is σ = 230112. Its totient is φ = 95840.

The previous prime is 158161. The next prime is 158189. The reversal of 158169 is 961851.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158169 - 2³ = 158161 is a prime.

It is a super-2 number, since 2×158169² = 50034865122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2364 + ... + 2429.

It is an arithmetic number, because the mean of its divisors is an integer number (28764).

2¹⁵⁸¹⁶⁹ is an apocalyptic number.

It is an amenable number.

158169 is a deficient number, since it is larger than the sum of its proper divisors (71943).

158169 is a wasteful number, since it uses less digits than its factorization.

158169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807.

The product of its digits is 2160, while the sum is 30.

The square root of 158169 is about 397.7046642925. The cubic root of 158169 is about 54.0804698747.

The spelling of 158169 in words is "one hundred fifty-eight thousand, one hundred sixty-nine".