165418041 has 16 divisors (see below), whose sum is σ = 235721664. Its totient is φ = 102818304.

The previous prime is 165418037. The next prime is 165418049. The reversal of 165418041 is 140814561.

It is not a de Polignac number, because 165418041 - 2² = 165418037 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165418049) 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 15 ways as a sum of consecutive naturals, for example, 9700 + ... + 20613.

It is an arithmetic number, because the mean of its divisors is an integer number (14732604).

Almost surely, 2^165418041 is an apocalyptic number.

It is an amenable number.

165418041 is a deficient number, since it is larger than the sum of its proper divisors (70303623).

165418041 is a wasteful number, since it uses less digits than its factorization.

165418041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30440.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 165418041 is about 12861.4945088042. The cubic root of 165418041 is about 548.9434714740.

The spelling of 165418041 in words is "one hundred sixty-five million, four hundred eighteen thousand, forty-one".