38905013 has 8 divisors (see below), whose sum is σ = 45216960. Its totient is φ = 32781600.

The previous prime is 38905001. The next prime is 38905033. The reversal of 38905013 is 31050983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38905013 - 2⁴ = 38904997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38905033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46688 + ... + 47513.

It is an arithmetic number, because the mean of its divisors is an integer number (5652120).

Almost surely, 2^38905013 is an apocalyptic number.

It is an amenable number.

38905013 is a deficient number, since it is larger than the sum of its proper divisors (6311947).

38905013 is an equidigital number, since it uses as much as digits as its factorization.

38905013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94267.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 38905013 is about 6237.3883156334. The cubic root of 38905013 is about 338.8456033858.

Adding to 38905013 its reverse (31050983), we get a palindrome (69955996).

The spelling of 38905013 in words is "thirty-eight million, nine hundred five thousand, thirteen".