164419165 has 4 divisors (see below), whose sum is σ = 197303004. Its totient is φ = 131535328.

The previous prime is 164419163. The next prime is 164419187. The reversal of 164419165 is 561914461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97653924 + 66765241 = 9882^2 + 8171^2 .

It is a cyclic number.

It is not a de Polignac number, because 164419165 - 2¹ = 164419163 is a prime.

It is a super-3 number, since 3×164419165³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164419163) 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, 16441912 + ... + 16441921.

It is an arithmetic number, because the mean of its divisors is an integer number (49325751).

Almost surely, 2^164419165 is an apocalyptic number.

It is an amenable number.

164419165 is a deficient number, since it is larger than the sum of its proper divisors (32883839).

164419165 is an equidigital number, since it uses as much as digits as its factorization.

164419165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32883838.

The product of its digits is 25920, while the sum is 37.

The square root of 164419165 is about 12822.6036747612. The cubic root of 164419165 is about 547.8363091555.

The spelling of 164419165 in words is "one hundred sixty-four million, four hundred nineteen thousand, one hundred sixty-five".