7268638057 has 2 divisors, whose sum is σ = 7268638058. Its totient is φ = 7268638056.

The previous prime is 7268638051. The next prime is 7268638067. The reversal of 7268638057 is 7508368627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6193847401 + 1074790656 = 78701^2 + 32784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7268638057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7268637995 and 7268638013.

It is not a weakly prime, because it can be changed into another prime (7268638051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3634319028 + 3634319029.

It is an arithmetic number, because the mean of its divisors is an integer number (3634319029).

Almost surely, 2^7268638057 is an apocalyptic number.

It is an amenable number.

7268638057 is a deficient number, since it is larger than the sum of its proper divisors (1).

7268638057 is an equidigital number, since it uses as much as digits as its factorization.

7268638057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The square root of 7268638057 is about 85256.3080188205. The cubic root of 7268638057 is about 1937.0954211055.

The spelling of 7268638057 in words is "seven billion, two hundred sixty-eight million, six hundred thirty-eight thousand, fifty-seven".