38790281 has 2 divisors, whose sum is σ = 38790282. Its totient is φ = 38790280.

The previous prime is 38790247. The next prime is 38790289. The reversal of 38790281 is 18209783.

38790281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37100281 + 1690000 = 6091^2 + 1300^2 .

It is an emirp because it is prime and its reverse (18209783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38790281 - 2⁶ = 38790217 is a prime.

It is a super-2 number, since 2×38790281² = 3009371800117922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38790289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19395140 + 19395141.

It is an arithmetic number, because the mean of its divisors is an integer number (19395141).

Almost surely, 2^38790281 is an apocalyptic number.

It is an amenable number.

38790281 is a deficient number, since it is larger than the sum of its proper divisors (1).

38790281 is an equidigital number, since it uses as much as digits as its factorization.

38790281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 38790281 is about 6228.1844063900. The cubic root of 38790281 is about 338.5121869492.

The spelling of 38790281 in words is "thirty-eight million, seven hundred ninety thousand, two hundred eighty-one".