4944887657 has 2 divisors, whose sum is σ = 4944887658. Its totient is φ = 4944887656.

The previous prime is 4944887603. The next prime is 4944887671. The reversal of 4944887657 is 7567884494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2756145001 + 2188742656 = 52499^2 + 46784^2 .

It is a cyclic number.

It is not a de Polignac number, because 4944887657 - 2¹² = 4944883561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4944887657.

It is not a weakly prime, because it can be changed into another prime (4944887677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472443828 + 2472443829.

It is an arithmetic number, because the mean of its divisors is an integer number (2472443829).

Almost surely, 2^4944887657 is an apocalyptic number.

It is an amenable number.

4944887657 is a deficient number, since it is larger than the sum of its proper divisors (1).

4944887657 is an equidigital number, since it uses as much as digits as its factorization.

4944887657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54190080, while the sum is 62.

The square root of 4944887657 is about 70319.8951719924. The cubic root of 4944887657 is about 1703.6700018581.

The spelling of 4944887657 in words is "four billion, nine hundred forty-four million, eight hundred eighty-seven thousand, six hundred fifty-seven".