38567681 has 2 divisors, whose sum is σ = 38567682. Its totient is φ = 38567680.

The previous prime is 38567609. The next prime is 38567687. The reversal of 38567681 is 18676583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23814400 + 14753281 = 4880^2 + 3841^2 .

It is an emirp because it is prime and its reverse (18676583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38567681 - 2¹⁴ = 38551297 is a prime.

It is a super-2 number, since 2×38567681² = 2974932035435522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38567687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19283840 + 19283841.

It is an arithmetic number, because the mean of its divisors is an integer number (19283841).

Almost surely, 2^38567681 is an apocalyptic number.

It is an amenable number.

38567681 is a deficient number, since it is larger than the sum of its proper divisors (1).

38567681 is an equidigital number, since it uses as much as digits as its factorization.

38567681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 38567681 is about 6210.2883185888. The cubic root of 38567681 is about 337.8634212377.

The spelling of 38567681 in words is "thirty-eight million, five hundred sixty-seven thousand, six hundred eighty-one".