38118105457 has 2 divisors, whose sum is σ = 38118105458. Its totient is φ = 38118105456.

The previous prime is 38118105359. The next prime is 38118105491. The reversal of 38118105457 is 75450181183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22450826896 + 15667278561 = 149836^2 + 125169^2 .

It is a cyclic number.

It is not a de Polignac number, because 38118105457 - 2⁷ = 38118105329 is a prime.

It is not a weakly prime, because it can be changed into another prime (38118106457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19059052728 + 19059052729.

It is an arithmetic number, because the mean of its divisors is an integer number (19059052729).

Almost surely, 2^38118105457 is an apocalyptic number.

It is an amenable number.

38118105457 is a deficient number, since it is larger than the sum of its proper divisors (1).

38118105457 is an equidigital number, since it uses as much as digits as its factorization.

38118105457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 38118105457 in words is "thirty-eight billion, one hundred eighteen million, one hundred five thousand, four hundred fifty-seven".