149165 has 4 divisors (see below), whose sum is σ = 179004. Its totient is φ = 119328.

The previous prime is 149161. The next prime is 149173. The reversal of 149165 is 561941.

149165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561941 = 269 ⋅2089.

It can be written as a sum of positive squares in 2 ways, for example, as 58564 + 90601 = 242^2 + 301^2 .

It is a cyclic number.

It is not a de Polignac number, because 149165 - 2² = 149161 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149161) 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, 14912 + ... + 14921.

It is an arithmetic number, because the mean of its divisors is an integer number (44751).

2¹⁴⁹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

149165 is a deficient number, since it is larger than the sum of its proper divisors (29839).

149165 is an equidigital number, since it uses as much as digits as its factorization.

149165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29838.

The product of its digits is 1080, while the sum is 26.

The square root of 149165 is about 386.2188498766. The cubic root of 149165 is about 53.0341538494.

The spelling of 149165 in words is "one hundred forty-nine thousand, one hundred sixty-five".