5638384851 has 32 divisors (see below), whose sum is σ = 8267470848. Its totient is φ = 3389744640.

The previous prime is 5638384819. The next prime is 5638384861. The reversal of 5638384851 is 1584838365.

It is a happy number.

It is not a de Polignac number, because 5638384851 - 2⁵ = 5638384819 is a prime.

It is a super-3 number, since 3×5638384851³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5638384794 and 5638384803.

It is not an unprimeable number, because it can be changed into a prime (5638384861) 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, 2331595 + ... + 2334011.

It is an arithmetic number, because the mean of its divisors is an integer number (258358464).

Almost surely, 2^5638384851 is an apocalyptic number.

5638384851 is a deficient number, since it is larger than the sum of its proper divisors (2629085997).

5638384851 is a wasteful number, since it uses less digits than its factorization.

5638384851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971.

The product of its digits is 2764800, while the sum is 51.

The square root of 5638384851 is about 75089.1793203255. The cubic root of 5638384851 is about 1779.8561566841.

The spelling of 5638384851 in words is "five billion, six hundred thirty-eight million, three hundred eighty-four thousand, eight hundred fifty-one".