38065509 has 12 divisors (see below), whose sum is σ = 55095456. Its totient is φ = 25325352.

The previous prime is 38065471. The next prime is 38065513. The reversal of 38065509 is 90556083.

It is not a de Polignac number, because 38065509 - 2⁹ = 38064997 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38065109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 664 + ... + 8750.

It is an arithmetic number, because the mean of its divisors is an integer number (4591288).

Almost surely, 2^38065509 is an apocalyptic number.

It is an amenable number.

38065509 is a deficient number, since it is larger than the sum of its proper divisors (17029947).

38065509 is a wasteful number, since it uses less digits than its factorization.

38065509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8616 (or 8613 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 38065509 is about 6169.7251964735. The cubic root of 38065509 is about 336.3906224425.

The spelling of 38065509 in words is "thirty-eight million, sixty-five thousand, five hundred nine".