5489641657 has 2 divisors, whose sum is σ = 5489641658. Its totient is φ = 5489641656.

The previous prime is 5489641637. The next prime is 5489641667. The reversal of 5489641657 is 7561469845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5158256041 + 331385616 = 71821^2 + 18204^2 .

It is a cyclic number.

It is not a de Polignac number, because 5489641657 - 2⁷ = 5489641529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5489641598 and 5489641607.

It is not a weakly prime, because it can be changed into another prime (5489641637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2744820828 + 2744820829.

It is an arithmetic number, because the mean of its divisors is an integer number (2744820829).

Almost surely, 2^5489641657 is an apocalyptic number.

It is an amenable number.

5489641657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5489641657 is an equidigital number, since it uses as much as digits as its factorization.

5489641657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7257600, while the sum is 55.

The square root of 5489641657 is about 74092.1160245812. The cubic root of 5489641657 is about 1764.0653331186.

The spelling of 5489641657 in words is "five billion, four hundred eighty-nine million, six hundred forty-one thousand, six hundred fifty-seven".