38838493217 has 2 divisors, whose sum is σ = 38838493218. Its totient is φ = 38838493216.

The previous prime is 38838493171. The next prime is 38838493229. The reversal of 38838493217 is 71239483883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29651462416 + 9187030801 = 172196^2 + 95849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38838493217 is a prime.

It is not a weakly prime, because it can be changed into another prime (38838493247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19419246608 + 19419246609.

It is an arithmetic number, because the mean of its divisors is an integer number (19419246609).

Almost surely, 2^38838493217 is an apocalyptic number.

It is an amenable number.

38838493217 is a deficient number, since it is larger than the sum of its proper divisors (1).

38838493217 is an equidigital number, since it uses as much as digits as its factorization.

38838493217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 56.

The spelling of 38838493217 in words is "thirty-eight billion, eight hundred thirty-eight million, four hundred ninety-three thousand, two hundred seventeen".