229811418 has 56 divisors (see below), whose sum is σ = 520547808. Its totient is φ = 76055112.

The previous prime is 229811357. The next prime is 229811429. The reversal of 229811418 is 814118922.

It is a happy number.

229811418 is a `hidden beast` number, since 229 + 8 + 11 + 418 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 237171 + ... + 238137.

Almost surely, 2^229811418 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229811418, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260273904).

229811418 is an abundant number, since it is smaller than the sum of its proper divisors (290736390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229811418 is an equidigital number, since it uses as much as digits as its factorization.

229811418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1135 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 229811418 is about 15159.5322487206. The cubic root of 229811418 is about 612.5250684173.

The spelling of 229811418 in words is "two hundred twenty-nine million, eight hundred eleven thousand, four hundred eighteen".