38318971 has 2 divisors, whose sum is σ = 38318972. Its totient is φ = 38318970.

The previous prime is 38318933. The next prime is 38319011. The reversal of 38318971 is 17981383.

It is an a-pointer prime, because the next prime (38319011) can be obtained adding 38318971 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38318971 - 2¹¹ = 38316923 is a prime.

It is not a weakly prime, because it can be changed into another prime (38318911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19159485 + 19159486.

It is an arithmetic number, because the mean of its divisors is an integer number (19159486).

Almost surely, 2^38318971 is an apocalyptic number.

38318971 is a deficient number, since it is larger than the sum of its proper divisors (1).

38318971 is an equidigital number, since it uses as much as digits as its factorization.

38318971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 38318971 is about 6190.2319019565. The cubic root of 38318971 is about 337.1355986471.

The spelling of 38318971 in words is "thirty-eight million, three hundred eighteen thousand, nine hundred seventy-one".