5518783657 has 2 divisors, whose sum is σ = 5518783658. Its totient is φ = 5518783656.

The previous prime is 5518783631. The next prime is 5518783679. The reversal of 5518783657 is 7563878155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5267275776 + 251507881 = 72576^2 + 15859^2 .

It is a cyclic number.

It is not a de Polignac number, because 5518783657 - 2¹⁵ = 5518750889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5518783598 and 5518783607.

It is not a weakly prime, because it can be changed into another prime (5518789657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2759391828 + 2759391829.

It is an arithmetic number, because the mean of its divisors is an integer number (2759391829).

Almost surely, 2^5518783657 is an apocalyptic number.

It is an amenable number.

5518783657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5518783657 is an equidigital number, since it uses as much as digits as its factorization.

5518783657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056000, while the sum is 55.

The square root of 5518783657 is about 74288.5163198189. The cubic root of 5518783657 is about 1767.1813647645.

The spelling of 5518783657 in words is "five billion, five hundred eighteen million, seven hundred eighty-three thousand, six hundred fifty-seven".