418008081 has 4 divisors (see below), whose sum is σ = 557344112. Its totient is φ = 278672052.

The previous prime is 418008077. The next prime is 418008089. The reversal of 418008081 is 180800814.

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 418008081 - 2² = 418008077 is a prime.

It is a super-2 number, since 2×418008081² = 349461511562605122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (418008089) 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, 69668011 + ... + 69668016.

It is an arithmetic number, because the mean of its divisors is an integer number (139336028).

Almost surely, 2^418008081 is an apocalyptic number.

It is an amenable number.

418008081 is a deficient number, since it is larger than the sum of its proper divisors (139336031).

418008081 is a wasteful number, since it uses less digits than its factorization.

418008081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139336030.

The product of its (nonzero) digits is 2048, while the sum is 30.

The square root of 418008081 is about 20445.2459266207. The cubic root of 418008081 is about 747.7014552301.

Adding to 418008081 its reverse (180800814), we get a palindrome (598808895).

The spelling of 418008081 in words is "four hundred eighteen million, eight thousand, eighty-one".