38390613 has 4 divisors (see below), whose sum is σ = 51187488. Its totient is φ = 25593740.

The previous prime is 38390609. The next prime is 38390629. The reversal of 38390613 is 31609383.

38390613 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 not a de Polignac number, because 38390613 - 2² = 38390609 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38390633) 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, 6398433 + ... + 6398438.

It is an arithmetic number, because the mean of its divisors is an integer number (12796872).

Almost surely, 2^38390613 is an apocalyptic number.

It is an amenable number.

38390613 is a deficient number, since it is larger than the sum of its proper divisors (12796875).

38390613 is a wasteful number, since it uses less digits than its factorization.

38390613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12796874.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 38390613 is about 6196.0158973327. The cubic root of 38390613 is about 337.3455732469.

Adding to 38390613 its reverse (31609383), we get a palindrome (69999996).

The spelling of 38390613 in words is "thirty-eight million, three hundred ninety thousand, six hundred thirteen".