164406041 has 4 divisors (see below), whose sum is σ = 167101284. Its totient is φ = 161710800.

The previous prime is 164406019. The next prime is 164406043. The reversal of 164406041 is 140604461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140604461 = 241 ⋅583421.

It can be written as a sum of positive squares in 2 ways, for example, as 43494025 + 120912016 = 6595^2 + 10996^2 .

It is a cyclic number.

It is not a de Polignac number, because 164406041 - 2⁶ = 164405977 is a prime.

It is a super-3 number, since 3×164406041³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164406041.

It is not an unprimeable number, because it can be changed into a prime (164406043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1347530 + ... + 1347651.

It is an arithmetic number, because the mean of its divisors is an integer number (41775321).

Almost surely, 2^164406041 is an apocalyptic number.

It is an amenable number.

164406041 is a deficient number, since it is larger than the sum of its proper divisors (2695243).

164406041 is an equidigital number, since it uses as much as digits as its factorization.

164406041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695242.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 164406041 is about 12822.0919120087. The cubic root of 164406041 is about 547.8217326005.

The spelling of 164406041 in words is "one hundred sixty-four million, four hundred six thousand, forty-one".