5185118657 has 2 divisors, whose sum is σ = 5185118658. Its totient is φ = 5185118656.

The previous prime is 5185118633. The next prime is 5185118681. The reversal of 5185118657 is 7568115815.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (5185118633) and next prime (5185118681).

It can be written as a sum of positive squares in only one way, i.e., 4181432896 + 1003685761 = 64664^2 + 31681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5185118657 is a prime.

It is not a weakly prime, because it can be changed into another prime (5185118557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2592559328 + 2592559329.

It is an arithmetic number, because the mean of its divisors is an integer number (2592559329).

Almost surely, 2^5185118657 is an apocalyptic number.

It is an amenable number.

5185118657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5185118657 is an equidigital number, since it uses as much as digits as its factorization.

5185118657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336000, while the sum is 47.

The square root of 5185118657 is about 72007.7680323450. The cubic root of 5185118657 is about 1730.8239648118.

The spelling of 5185118657 in words is "five billion, one hundred eighty-five million, one hundred eighteen thousand, six hundred fifty-seven".