38690842417 has 2 divisors, whose sum is σ = 38690842418. Its totient is φ = 38690842416.

The previous prime is 38690842381. The next prime is 38690842423. The reversal of 38690842417 is 71424809683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38196402721 + 494439696 = 195439^2 + 22236^2 .

It is an emirp because it is prime and its reverse (71424809683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38690842417 - 2¹⁵ = 38690809649 is a prime.

It is not a weakly prime, because it can be changed into another prime (38690842427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19345421208 + 19345421209.

It is an arithmetic number, because the mean of its divisors is an integer number (19345421209).

Almost surely, 2^38690842417 is an apocalyptic number.

It is an amenable number.

38690842417 is a deficient number, since it is larger than the sum of its proper divisors (1).

38690842417 is an equidigital number, since it uses as much as digits as its factorization.

38690842417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 38690842417 in words is "thirty-eight billion, six hundred ninety million, eight hundred forty-two thousand, four hundred seventeen".