38388000857 has 2 divisors, whose sum is σ = 38388000858. Its totient is φ = 38388000856.

The previous prime is 38388000853. The next prime is 38388000947. The reversal of 38388000857 is 75800088383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37556889616 + 831111241 = 193796^2 + 28829^2 .

It is an emirp because it is prime and its reverse (75800088383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38388000857 - 2² = 38388000853 is a prime.

It is not a weakly prime, because it can be changed into another prime (38388000851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19194000428 + 19194000429.

It is an arithmetic number, because the mean of its divisors is an integer number (19194000429).

Almost surely, 2^38388000857 is an apocalyptic number.

It is an amenable number.

38388000857 is a deficient number, since it is larger than the sum of its proper divisors (1).

38388000857 is an equidigital number, since it uses as much as digits as its factorization.

38388000857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 38388000857 in words is "thirty-eight billion, three hundred eighty-eight million, eight hundred fifty-seven", and thus it is an aban number.