38938013 has 2 divisors, whose sum is σ = 38938014. Its totient is φ = 38938012.

The previous prime is 38938001. The next prime is 38938037. The reversal of 38938013 is 31083983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35485849 + 3452164 = 5957^2 + 1858^2 .

It is a cyclic number.

It is not a de Polignac number, because 38938013 - 2¹⁸ = 38675869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38938063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19469006 + 19469007.

It is an arithmetic number, because the mean of its divisors is an integer number (19469007).

Almost surely, 2^38938013 is an apocalyptic number.

It is an amenable number.

38938013 is a deficient number, since it is larger than the sum of its proper divisors (1).

38938013 is an equidigital number, since it uses as much as digits as its factorization.

38938013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 38938013 is about 6240.0330928610. The cubic root of 38938013 is about 338.9413814872.

The spelling of 38938013 in words is "thirty-eight million, nine hundred thirty-eight thousand, thirteen".