38338698857 has 2 divisors, whose sum is σ = 38338698858. Its totient is φ = 38338698856.

The previous prime is 38338698841. The next prime is 38338698869. The reversal of 38338698857 is 75889683383.

38338698857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37938858841 + 399840016 = 194779^2 + 19996^2 .

It is a cyclic number.

It is not a de Polignac number, because 38338698857 - 2⁴ = 38338698841 is a prime.

It is not a weakly prime, because it can be changed into another prime (38338698757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19169349428 + 19169349429.

It is an arithmetic number, because the mean of its divisors is an integer number (19169349429).

Almost surely, 2^38338698857 is an apocalyptic number.

It is an amenable number.

38338698857 is a deficient number, since it is larger than the sum of its proper divisors (1).

38338698857 is an equidigital number, since it uses as much as digits as its factorization.

38338698857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209018880, while the sum is 68.

The spelling of 38338698857 in words is "thirty-eight billion, three hundred thirty-eight million, six hundred ninety-eight thousand, eight hundred fifty-seven".