4685445857 has 2 divisors, whose sum is σ = 4685445858. Its totient is φ = 4685445856.

The previous prime is 4685445823. The next prime is 4685445887. The reversal of 4685445857 is 7585445864.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3006986896 + 1678458961 = 54836^2 + 40969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4685445857 is a prime.

It is not a weakly prime, because it can be changed into another prime (4685445887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2342722928 + 2342722929.

It is an arithmetic number, because the mean of its divisors is an integer number (2342722929).

Almost surely, 2^4685445857 is an apocalyptic number.

It is an amenable number.

4685445857 is a deficient number, since it is larger than the sum of its proper divisors (1).

4685445857 is an equidigital number, since it uses as much as digits as its factorization.

4685445857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504000, while the sum is 56.

The square root of 4685445857 is about 68450.3167048919. The cubic root of 4685445857 is about 1673.3378753080.

The spelling of 4685445857 in words is "four billion, six hundred eighty-five million, four hundred forty-five thousand, eight hundred fifty-seven".