38822191 has 2 divisors, whose sum is σ = 38822192. Its totient is φ = 38822190.

The previous prime is 38822153. The next prime is 38822209. The reversal of 38822191 is 19122883.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38822191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38822591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19411095 + 19411096.

It is an arithmetic number, because the mean of its divisors is an integer number (19411096).

Almost surely, 2^38822191 is an apocalyptic number.

38822191 is a deficient number, since it is larger than the sum of its proper divisors (1).

38822191 is an equidigital number, since it uses as much as digits as its factorization.

38822191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 38822191 is about 6230.7456215127. The cubic root of 38822191 is about 338.6049847924.

The spelling of 38822191 in words is "thirty-eight million, eight hundred twenty-two thousand, one hundred ninety-one".