418090813 has 16 divisors (see below), whose sum is σ = 489404160. Its totient is φ = 349776000.

The previous prime is 418090811. The next prime is 418090819. The reversal of 418090813 is 318090814.

It is a happy number.

It is not a de Polignac number, because 418090813 - 2¹ = 418090811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (418090811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46033 + ... + 54361.

It is an arithmetic number, because the mean of its divisors is an integer number (30587760).

Almost surely, 2^418090813 is an apocalyptic number.

It is an amenable number.

418090813 is a deficient number, since it is larger than the sum of its proper divisors (71313347).

418090813 is a wasteful number, since it uses less digits than its factorization.

418090813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8508.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 418090813 is about 20447.2690841589. The cubic root of 418090813 is about 747.7507802384.

Subtracting from 418090813 its reverse (318090814), we obtain a palindrome (99999999).

The spelling of 418090813 in words is "four hundred eighteen million, ninety thousand, eight hundred thirteen".