8938321057 has 2 divisors, whose sum is σ = 8938321058. Its totient is φ = 8938321056.

The previous prime is 8938320967. The next prime is 8938321103. The reversal of 8938321057 is 7501238398.

It is an a-pointer prime, because the next prime (8938321103) can be obtained adding 8938321057 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7604537616 + 1333783441 = 87204^2 + 36521^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8938321057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8938320998 and 8938321016.

It is not a weakly prime, because it can be changed into another prime (8936321057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4469160528 + 4469160529.

It is an arithmetic number, because the mean of its divisors is an integer number (4469160529).

Almost surely, 2^8938321057 is an apocalyptic number.

It is an amenable number.

8938321057 is a deficient number, since it is larger than the sum of its proper divisors (1).

8938321057 is an equidigital number, since it uses as much as digits as its factorization.

8938321057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 8938321057 is about 94542.6943608019. The cubic root of 8938321057 is about 2075.3211720984.

The spelling of 8938321057 in words is "eight billion, nine hundred thirty-eight million, three hundred twenty-one thousand, fifty-seven".