38938894013 has 2 divisors, whose sum is σ = 38938894014. Its totient is φ = 38938894012.

The previous prime is 38938893977. The next prime is 38938894069. The reversal of 38938894013 is 31049883983.

38938894013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (38938894069) can be obtained adding 38938894013 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33108349849 + 5830544164 = 181957^2 + 76358^2 .

It is a cyclic number.

It is not a de Polignac number, because 38938894013 - 2¹⁴ = 38938877629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38938894013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38938894073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19469447006 + 19469447007.

It is an arithmetic number, because the mean of its divisors is an integer number (19469447007).

Almost surely, 2^38938894013 is an apocalyptic number.

It is an amenable number.

38938894013 is a deficient number, since it is larger than the sum of its proper divisors (1).

38938894013 is an equidigital number, since it uses as much as digits as its factorization.

38938894013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 38938894013 in words is "thirty-eight billion, nine hundred thirty-eight million, eight hundred ninety-four thousand, thirteen".