5638341865 has 32 divisors (see below), whose sum is σ = 7678298880. Its totient is φ = 3940275456.

The previous prime is 5638341859. The next prime is 5638341869. The reversal of 5638341865 is 5681438365.

It is not a de Polignac number, because 5638341865 - 2⁵ = 5638341833 is a prime.

It is a super-2 number, since 2×5638341865² = 63581797973223356450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5638341869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1508539 + ... + 1512271.

It is an arithmetic number, because the mean of its divisors is an integer number (239946840).

Almost surely, 2^5638341865 is an apocalyptic number.

It is an amenable number.

5638341865 is a deficient number, since it is larger than the sum of its proper divisors (2039957015).

5638341865 is a wasteful number, since it uses less digits than its factorization.

5638341865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993.

The product of its digits is 2073600, while the sum is 49.

The square root of 5638341865 is about 75088.8930867941. The cubic root of 5638341865 is about 1779.8516335749.

The spelling of 5638341865 in words is "five billion, six hundred thirty-eight million, three hundred forty-one thousand, eight hundred sixty-five".