38403638459 has 2 divisors, whose sum is σ = 38403638460. Its totient is φ = 38403638458.

The previous prime is 38403638369. The next prime is 38403638467. The reversal of 38403638459 is 95483630483.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (95483630483) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38403638459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38403638459.

It is not a weakly prime, because it can be changed into another prime (38403638479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19201819229 + 19201819230.

It is an arithmetic number, because the mean of its divisors is an integer number (19201819230).

Almost surely, 2^38403638459 is an apocalyptic number.

38403638459 is a deficient number, since it is larger than the sum of its proper divisors (1).

38403638459 is an equidigital number, since it uses as much as digits as its factorization.

38403638459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 38403638459 in words is "thirty-eight billion, four hundred three million, six hundred thirty-eight thousand, four hundred fifty-nine".