38206513 has 4 divisors (see below), whose sum is σ = 38481520. Its totient is φ = 37931508.

The previous prime is 38206507. The next prime is 38206517. The reversal of 38206513 is 31560283.

38206513 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38206513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38206517) 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, 137295 + ... + 137572.

It is an arithmetic number, because the mean of its divisors is an integer number (9620380).

Almost surely, 2^38206513 is an apocalyptic number.

It is an amenable number.

38206513 is a deficient number, since it is larger than the sum of its proper divisors (275007).

38206513 is a wasteful number, since it uses less digits than its factorization.

38206513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275006.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 38206513 is about 6181.1417230153. The cubic root of 38206513 is about 336.8054684776.

Adding to 38206513 its reverse (31560283), we get a palindrome (69766796).

The spelling of 38206513 in words is "thirty-eight million, two hundred six thousand, five hundred thirteen".