38680513 has 4 divisors (see below), whose sum is σ = 39410388. Its totient is φ = 37950640.

The previous prime is 38680511. The next prime is 38680531. The reversal of 38680513 is 31508683.

It is a happy number.

38680513 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 25633969 + 13046544 = 5063^2 + 3612^2 .

It is a cyclic number.

It is not a de Polignac number, because 38680513 - 2¹ = 38680511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38680511) by changing a digit.

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, 364858 + ... + 364963.

It is an arithmetic number, because the mean of its divisors is an integer number (9852597).

Almost surely, 2^38680513 is an apocalyptic number.

It is an amenable number.

38680513 is a deficient number, since it is larger than the sum of its proper divisors (729875).

38680513 is an equidigital number, since it uses as much as digits as its factorization.

38680513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729874.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 38680513 is about 6219.3659644694. The cubic root of 38680513 is about 338.1925801691.

It can be divided in two parts, 3868051 and 3, that multiplied together give a triangular number (11604153 = T₄₈₁₇).

The spelling of 38680513 in words is "thirty-eight million, six hundred eighty thousand, five hundred thirteen".