5638888117 has 8 divisors (see below), whose sum is σ = 6005102616. Its totient is φ = 5276508672.

The previous prime is 5638888091. The next prime is 5638888181. The reversal of 5638888117 is 7118888365.

It can be written as a sum of positive squares in 4 ways, for example, as 1887815601 + 3751072516 = 43449^2 + 61246^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5638888117 - 2¹¹ = 5638886069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638888187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955728 + ... + 961609.

It is an arithmetic number, because the mean of its divisors is an integer number (750637827).

Almost surely, 2^5638888117 is an apocalyptic number.

It is an amenable number.

5638888117 is a deficient number, since it is larger than the sum of its proper divisors (366214499).

5638888117 is a wasteful number, since it uses less digits than its factorization.

5638888117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917527.

The product of its digits is 2580480, while the sum is 55.

The square root of 5638888117 is about 75092.5303675406. The cubic root of 5638888117 is about 1779.9091100542.

The spelling of 5638888117 in words is "five billion, six hundred thirty-eight million, eight hundred eighty-eight thousand, one hundred seventeen".