38000191 has 2 divisors, whose sum is σ = 38000192. Its totient is φ = 38000190.

The previous prime is 38000161. The next prime is 38000197. The reversal of 38000191 is 19100083.

It is a strong prime.

It is an emirp because it is prime and its reverse (19100083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38000191 - 2¹⁹ = 37475903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38000197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19000095 + 19000096.

It is an arithmetic number, because the mean of its divisors is an integer number (19000096).

Almost surely, 2^38000191 is an apocalyptic number.

38000191 is a deficient number, since it is larger than the sum of its proper divisors (1).

38000191 is an equidigital number, since it uses as much as digits as its factorization.

38000191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 38000191 is about 6164.4294950952. The cubic root of 38000191 is about 336.1981039573.

The spelling of 38000191 in words is "thirty-eight million, one hundred ninety-one", and thus it is an aban number.