38809193 has 2 divisors, whose sum is σ = 38809194. Its totient is φ = 38809192.

The previous prime is 38809187. The next prime is 38809201. The reversal of 38809193 is 39190883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32296489 + 6512704 = 5683^2 + 2552^2 .

It is a cyclic number.

It is not a de Polignac number, because 38809193 - 2⁶ = 38809129 is a prime.

It is a super-2 number, since 2×38809193² = 3012306922622498, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38809193.

It is not a weakly prime, because it can be changed into another prime (38800193) 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, 19404596 + 19404597.

It is an arithmetic number, because the mean of its divisors is an integer number (19404597).

Almost surely, 2^38809193 is an apocalyptic number.

It is an amenable number.

38809193 is a deficient number, since it is larger than the sum of its proper divisors (1).

38809193 is an equidigital number, since it uses as much as digits as its factorization.

38809193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 38809193 is about 6229.7024808573. The cubic root of 38809193 is about 338.5671912972.

The spelling of 38809193 in words is "thirty-eight million, eight hundred nine thousand, one hundred ninety-three".