5188487657 has 8 divisors (see below), whose sum is σ = 5212778760. Its totient is φ = 5164241920.

The previous prime is 5188487653. The next prime is 5188487659. The reversal of 5188487657 is 7567848815.

It can be written as a sum of positive squares in 4 ways, for example, as 292546816 + 4895940841 = 17104^2 + 69971^2 .

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 5188487657 - 2² = 5188487653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5188487596 and 5188487605.

It is not an unprimeable number, because it can be changed into a prime (5188487651) 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, 229769 + ... + 251337.

It is an arithmetic number, because the mean of its divisors is an integer number (651597345).

Almost surely, 2^5188487657 is an apocalyptic number.

It is an amenable number.

5188487657 is a deficient number, since it is larger than the sum of its proper divisors (24291103).

5188487657 is a wasteful number, since it uses less digits than its factorization.

5188487657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22683.

The product of its digits is 15052800, while the sum is 59.

The square root of 5188487657 is about 72031.1575431077. The cubic root of 5188487657 is about 1731.1987478439.

The spelling of 5188487657 in words is "five billion, one hundred eighty-eight million, four hundred eighty-seven thousand, six hundred fifty-seven".