5543841818 has 4 divisors (see below), whose sum is σ = 8315762730. Its totient is φ = 2771920908.

The previous prime is 5543841799. The next prime is 5543841881. The reversal of 5543841818 is 8181483455.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5177234209 + 366607609 = 71953^2 + 19147^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385960453 + ... + 1385960456.

Almost surely, 2^5543841818 is an apocalyptic number.

5543841818 is a deficient number, since it is larger than the sum of its proper divisors (2771920912).

5543841818 is a wasteful number, since it uses less digits than its factorization.

5543841818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771920911.

The product of its digits is 614400, while the sum is 47.

The square root of 5543841818 is about 74456.9796459674. The cubic root of 5543841818 is about 1769.8519690643.

The spelling of 5543841818 in words is "five billion, five hundred forty-three million, eight hundred forty-one thousand, eight hundred eighteen".