418161 has 4 divisors (see below), whose sum is σ = 557552. Its totient is φ = 278772.

The previous prime is 418157. The next prime is 418169. The reversal of 418161 is 161814.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 418161 - 2² = 418157 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (418169) 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, 69691 + ... + 69696.

It is an arithmetic number, because the mean of its divisors is an integer number (139388).

2⁴¹⁸¹⁶¹ is an apocalyptic number.

It is an amenable number.

418161 is a deficient number, since it is larger than the sum of its proper divisors (139391).

418161 is a wasteful number, since it uses less digits than its factorization.

418161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139390.

The product of its digits is 192, while the sum is 21.

The square root of 418161 is about 646.6536940280. The cubic root of 418161 is about 74.7792620787.

Adding to 418161 its reverse (161814), we get a palindrome (579975).

The spelling of 418161 in words is "four hundred eighteen thousand, one hundred sixty-one".