4956371681 has 2 divisors, whose sum is σ = 4956371682. Its totient is φ = 4956371680.

The previous prime is 4956371677. The next prime is 4956371747. The reversal of 4956371681 is 1861736594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4785180625 + 171191056 = 69175^2 + 13084^2 .

It is a cyclic number.

It is not a de Polignac number, because 4956371681 - 2² = 4956371677 is a prime.

It is a super-2 number, since 2×4956371681² = 49131240480437531522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4956371671) 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, 2478185840 + 2478185841.

It is an arithmetic number, because the mean of its divisors is an integer number (2478185841).

Almost surely, 2^4956371681 is an apocalyptic number.

It is an amenable number.

4956371681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4956371681 is an equidigital number, since it uses as much as digits as its factorization.

4956371681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 4956371681 is about 70401.5034001405. The cubic root of 4956371681 is about 1704.9878518698.

The spelling of 4956371681 in words is "four billion, nine hundred fifty-six million, three hundred seventy-one thousand, six hundred eighty-one".