3918388826057 has 2 divisors, whose sum is σ = 3918388826058. Its totient is φ = 3918388826056.

The previous prime is 3918388826039. The next prime is 3918388826083. The reversal of 3918388826057 is 7506288838193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3804434646016 + 113954180041 = 1950496^2 + 337571^2 .

It is a cyclic number.

It is not a de Polignac number, because 3918388826057 - 2⁸ = 3918388825801 is a prime.

It is not a weakly prime, because it can be changed into another prime (3918388826357) 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, 1959194413028 + 1959194413029.

It is an arithmetic number, because the mean of its divisors is an integer number (1959194413029).

Almost surely, 2^{3918388826057} is an apocalyptic number.

It is an amenable number.

3918388826057 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918388826057 is an equidigital number, since it uses as much as digits as its factorization.

3918388826057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139345920, while the sum is 68.

The spelling of 3918388826057 in words is "three trillion, nine hundred eighteen billion, three hundred eighty-eight million, eight hundred twenty-six thousand, fifty-seven".