38318908091 has 2 divisors, whose sum is σ = 38318908092. Its totient is φ = 38318908090.

The previous prime is 38318908039. The next prime is 38318908093. The reversal of 38318908091 is 19080981383.

It is a strong prime.

It is an emirp because it is prime and its reverse (19080981383) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38318908091 - 2²⁶ = 38251799227 is a prime.

Together with 38318908093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38318908093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19159454045 + 19159454046.

It is an arithmetic number, because the mean of its divisors is an integer number (19159454046).

Almost surely, 2^38318908091 is an apocalyptic number.

38318908091 is a deficient number, since it is larger than the sum of its proper divisors (1).

38318908091 is an equidigital number, since it uses as much as digits as its factorization.

38318908091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 38318908091 in words is "thirty-eight billion, three hundred eighteen million, nine hundred eight thousand, ninety-one".