38681365 has 4 divisors (see below), whose sum is σ = 46417644. Its totient is φ = 30945088.

The previous prime is 38681351. The next prime is 38681371. The reversal of 38681365 is 56318683.

38681365 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12895281 + 25786084 = 3591^2 + 5078^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38681365 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 a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3868132 + ... + 3868141.

It is an arithmetic number, because the mean of its divisors is an integer number (11604411).

Almost surely, 2^38681365 is an apocalyptic number.

It is an amenable number.

38681365 is a deficient number, since it is larger than the sum of its proper divisors (7736279).

38681365 is an equidigital number, since it uses as much as digits as its factorization.

38681365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7736278.

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

The square root of 38681365 is about 6219.4344598203. The cubic root of 38681365 is about 338.1950632279.

The spelling of 38681365 in words is "thirty-eight million, six hundred eighty-one thousand, three hundred sixty-five".