38966281 has 2 divisors, whose sum is σ = 38966282. Its totient is φ = 38966280.

The previous prime is 38966273. The next prime is 38966311. The reversal of 38966281 is 18266983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37711881 + 1254400 = 6141^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 38966281 - 2³ = 38966273 is a prime.

It is a super-2 number, since 2×38966281² = 3036742109941922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38966201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19483140 + 19483141.

It is an arithmetic number, because the mean of its divisors is an integer number (19483141).

Almost surely, 2^38966281 is an apocalyptic number.

It is an amenable number.

38966281 is a deficient number, since it is larger than the sum of its proper divisors (1).

38966281 is an equidigital number, since it uses as much as digits as its factorization.

38966281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 38966281 is about 6242.2977340079. The cubic root of 38966281 is about 339.0233825670.

The spelling of 38966281 in words is "thirty-eight million, nine hundred sixty-six thousand, two hundred eighty-one".