38455663683389 has 2 divisors, whose sum is σ = 38455663683390. Its totient is φ = 38455663683388.

The previous prime is 38455663683343. The next prime is 38455663683407. The reversal of 38455663683389 is 98338636655483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28930230814489 + 9525432868900 = 5378683^2 + 3086330^2 .

It is a cyclic number.

It is not a de Polignac number, because 38455663683389 - 2¹⁶ = 38455663617853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38455663683329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19227831841694 + 19227831841695.

It is an arithmetic number, because the mean of its divisors is an integer number (19227831841695).

Almost surely, 2^{38455663683389} is an apocalyptic number.

It is an amenable number.

38455663683389 is a deficient number, since it is larger than the sum of its proper divisors (1).

38455663683389 is an equidigital number, since it uses as much as digits as its factorization.

38455663683389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8062156800, while the sum is 77.

The spelling of 38455663683389 in words is "thirty-eight trillion, four hundred fifty-five billion, six hundred sixty-three million, six hundred eighty-three thousand, three hundred eighty-nine".