5647268218 has 4 divisors (see below), whose sum is σ = 8470902330. Its totient is φ = 2823634108.

The previous prime is 5647268213. The next prime is 5647268251. The reversal of 5647268218 is 8128627465.

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., 4715980929 + 931287289 = 68673^2 + 30517^2 .

It is not an unprimeable number, because it can be changed into a prime (5647268213) 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 as a sum of consecutive naturals, namely, 1411817053 + ... + 1411817056.

Almost surely, 2^5647268218 is an apocalyptic number.

5647268218 is a deficient number, since it is larger than the sum of its proper divisors (2823634112).

5647268218 is a wasteful number, since it uses less digits than its factorization.

5647268218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823634111.

The product of its digits is 1290240, while the sum is 49.

The square root of 5647268218 is about 75148.3081512818. The cubic root of 5647268218 is about 1780.7903969892.

The spelling of 5647268218 in words is "five billion, six hundred forty-seven million, two hundred sixty-eight thousand, two hundred eighteen".