4238542818 has 24 divisors (see below), whose sum is σ = 9356785308. Its totient is φ = 1386189792.

The previous prime is 4238542817. The next prime is 4238542837. The reversal of 4238542818 is 8182458324.

4238542818 is a `hidden beast` number, since 4 + 23 + 8 + 542 + 81 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3618383409 + 620159409 = 60153^2 + 24903^2 .

It is a super-2 number, since 2×4238542818² = 35930490440038762248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4238542817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2220505 + ... + 2222412.

Almost surely, 2^4238542818 is an apocalyptic number.

4238542818 is an abundant number, since it is smaller than the sum of its proper divisors (5118242490).

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

4238542818 is a wasteful number, since it uses less digits than its factorization.

4238542818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442978 (or 4442975 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 4238542818 is about 65104.0921755307. The cubic root of 4238542818 is about 1618.3490290572.

The spelling of 4238542818 in words is "four billion, two hundred thirty-eight million, five hundred forty-two thousand, eight hundred eighteen".