38168257 has 2 divisors, whose sum is σ = 38168258. Its totient is φ = 38168256.

The previous prime is 38168197. The next prime is 38168267. The reversal of 38168257 is 75286183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38142976 + 25281 = 6176^2 + 159^2 .

It is a cyclic number.

It is not a de Polignac number, because 38168257 - 2⁷ = 38168129 is a prime.

It is not a weakly prime, because it can be changed into another prime (38168267) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19084128 + 19084129.

It is an arithmetic number, because the mean of its divisors is an integer number (19084129).

Almost surely, 2^38168257 is an apocalyptic number.

It is an amenable number.

38168257 is a deficient number, since it is larger than the sum of its proper divisors (1).

38168257 is an equidigital number, since it uses as much as digits as its factorization.

38168257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 38168257 is about 6178.0463740571. The cubic root of 38168257 is about 336.6930170315.

The spelling of 38168257 in words is "thirty-eight million, one hundred sixty-eight thousand, two hundred fifty-seven".