38565139 has 2 divisors, whose sum is σ = 38565140. Its totient is φ = 38565138.

The previous prime is 38565119. The next prime is 38565151. The reversal of 38565139 is 93156583.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38565139 - 2⁷ = 38565011 is a prime.

It is not a weakly prime, because it can be changed into another prime (38565119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19282569 + 19282570.

It is an arithmetic number, because the mean of its divisors is an integer number (19282570).

Almost surely, 2^38565139 is an apocalyptic number.

38565139 is a deficient number, since it is larger than the sum of its proper divisors (1).

38565139 is an equidigital number, since it uses as much as digits as its factorization.

38565139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 38565139 is about 6210.0836548311. The cubic root of 38565139 is about 337.8559982031.

The spelling of 38565139 in words is "thirty-eight million, five hundred sixty-five thousand, one hundred thirty-nine".