38686315 has 4 divisors (see below), whose sum is σ = 46423584. Its totient is φ = 30949048.

The previous prime is 38686313. The next prime is 38686321. The reversal of 38686315 is 51368683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38686315 - 2¹ = 38686313 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38686313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3868627 + ... + 3868636.

It is an arithmetic number, because the mean of its divisors is an integer number (11605896).

Almost surely, 2^38686315 is an apocalyptic number.

38686315 is a deficient number, since it is larger than the sum of its proper divisors (7737269).

38686315 is an equidigital number, since it uses as much as digits as its factorization.

38686315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737268.

The product of its digits is 103680, while the sum is 40.

The square root of 38686315 is about 6219.8323932402. The cubic root of 38686315 is about 338.2094887285.

The spelling of 38686315 in words is "thirty-eight million, six hundred eighty-six thousand, three hundred fifteen".