38008513 has 4 divisors (see below), whose sum is σ = 38081988. Its totient is φ = 37935040.

The previous prime is 38008507. The next prime is 38008541. The reversal of 38008513 is 31580083.

38008513 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 14311089 + 23697424 = 3783^2 + 4868^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38008513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38008013) 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, 35956 + ... + 36997.

It is an arithmetic number, because the mean of its divisors is an integer number (9520497).

Almost surely, 2^38008513 is an apocalyptic number.

It is an amenable number.

38008513 is a deficient number, since it is larger than the sum of its proper divisors (73475).

38008513 is an equidigital number, since it uses as much as digits as its factorization.

38008513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73474.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 38008513 is about 6165.1044597801. The cubic root of 38008513 is about 336.2226445042. Note that the first 3 decimals are identical.

Adding to 38008513 its reverse (31580083), we get a palindrome (69588596).

The spelling of 38008513 in words is "thirty-eight million, eight thousand, five hundred thirteen".