38318257 has 2 divisors, whose sum is σ = 38318258. Its totient is φ = 38318256.

The previous prime is 38318249. The next prime is 38318279. The reversal of 38318257 is 75281383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 876096 = 6119^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 38318257 - 2³ = 38318249 is a prime.

It is not a weakly prime, because it can be changed into another prime (38318227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19159128 + 19159129.

It is an arithmetic number, because the mean of its divisors is an integer number (19159129).

Almost surely, 2^38318257 is an apocalyptic number.

It is an amenable number.

38318257 is a deficient number, since it is larger than the sum of its proper divisors (1).

38318257 is an equidigital number, since it uses as much as digits as its factorization.

38318257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 38318257 is about 6190.1742301812. The cubic root of 38318257 is about 337.1335046772.

The spelling of 38318257 in words is "thirty-eight million, three hundred eighteen thousand, two hundred fifty-seven".