38963818969 has 2 divisors, whose sum is σ = 38963818970. Its totient is φ = 38963818968.

The previous prime is 38963818849. The next prime is 38963818973. The reversal of 38963818969 is 96981836983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22436145369 + 16527673600 = 149787^2 + 128560^2 .

It is a cyclic number.

It is not a de Polignac number, because 38963818969 - 2⁷ = 38963818841 is a prime.

It is a super-2 number, since 2×38963818969² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 38963818898 and 38963818907.

It is not a weakly prime, because it can be changed into another prime (38963818669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19481909484 + 19481909485.

It is an arithmetic number, because the mean of its divisors is an integer number (19481909485).

Almost surely, 2^38963818969 is an apocalyptic number.

It is an amenable number.

38963818969 is a deficient number, since it is larger than the sum of its proper divisors (1).

38963818969 is an equidigital number, since it uses as much as digits as its factorization.

38963818969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120932352, while the sum is 70.

The spelling of 38963818969 in words is "thirty-eight billion, nine hundred sixty-three million, eight hundred eighteen thousand, nine hundred sixty-nine".