164145 has 16 divisors (see below), whose sum is σ = 271872. Its totient is φ = 84480.

The previous prime is 164117. The next prime is 164147. The reversal of 164145 is 541461.

It is not a de Polignac number, because 164145 - 2⁵ = 164113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289 + ... + 641.

It is an arithmetic number, because the mean of its divisors is an integer number (16992).

2¹⁶⁴¹⁴⁵ is an apocalyptic number.

164145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164145 is a deficient number, since it is larger than the sum of its proper divisors (107727).

164145 is a wasteful number, since it uses less digits than its factorization.

164145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392.

The product of its digits is 480, while the sum is 21.

The square root of 164145 is about 405.1481210619. The cubic root of 164145 is about 54.7531638463.

It can be divided in two parts, 1 and 64145, that added together give a palindrome (64146).

The spelling of 164145 in words is "one hundred sixty-four thousand, one hundred forty-five".