164187 has 10 divisors (see below), whose sum is σ = 245388. Its totient is φ = 109404.

The previous prime is 164183. The next prime is 164191. The reversal of 164187 is 781461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (164183) and next prime (164191).

It is not a de Polignac number, because 164187 - 2² = 164183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 164187.

It is not an unprimeable number, because it can be changed into a prime (164183) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 933 + ... + 1094.

2¹⁶⁴¹⁸⁷ is an apocalyptic number.

164187 is a deficient number, since it is larger than the sum of its proper divisors (81201).

164187 is an equidigital number, since it uses as much as digits as its factorization.

164187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039 (or 2030 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 164187 is about 405.1999506417. The cubic root of 164187 is about 54.7578333697.

It can be divided in two parts, 1641 and 87, that added together give a cube (1728 = 12³).

The spelling of 164187 in words is "one hundred sixty-four thousand, one hundred eighty-seven".