5186838644 has 12 divisors (see below), whose sum is σ = 9775196004. Its totient is φ = 2393925504.

The previous prime is 5186838641. The next prime is 5186838659. The reversal of 5186838644 is 4468386815.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2228784100 + 2958054544 = 47210^2 + 54388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5186838641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49873397 + ... + 49873500.

It is an arithmetic number, because the mean of its divisors is an integer number (814599667).

Almost surely, 2^5186838644 is an apocalyptic number.

It is an amenable number.

5186838644 is a deficient number, since it is larger than the sum of its proper divisors (4588357360).

5186838644 is a wasteful number, since it uses less digits than its factorization.

5186838644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99746914 (or 99746912 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 53.

The square root of 5186838644 is about 72019.7101077198. The cubic root of 5186838644 is about 1731.0153243418.

The spelling of 5186838644 in words is "five billion, one hundred eighty-six million, eight hundred thirty-eight thousand, six hundred forty-four".