38007857 has 2 divisors, whose sum is σ = 38007858. Its totient is φ = 38007856.

The previous prime is 38007833. The next prime is 38007877. The reversal of 38007857 is 75870083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37834801 + 173056 = 6151^2 + 416^2 .

It is a cyclic number.

It is not a de Polignac number, because 38007857 - 2⁶ = 38007793 is a prime.

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 38007857.

It is not a weakly prime, because it can be changed into another prime (38007877) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19003928 + 19003929.

It is an arithmetic number, because the mean of its divisors is an integer number (19003929).

Almost surely, 2^38007857 is an apocalyptic number.

It is an amenable number.

38007857 is a deficient number, since it is larger than the sum of its proper divisors (1).

38007857 is an equidigital number, since it uses as much as digits as its factorization.

38007857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 38007857 is about 6165.0512568834. The cubic root of 38007857 is about 336.2207101715.

The spelling of 38007857 in words is "thirty-eight million, seven thousand, eight hundred fifty-seven".