38963818793 has 2 divisors, whose sum is σ = 38963818794. Its totient is φ = 38963818792.

The previous prime is 38963818781. The next prime is 38963818799. The reversal of 38963818793 is 39781836983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32224558144 + 6739260649 = 179512^2 + 82093^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38963818793 is a prime.

It is not a weakly prime, because it can be changed into another prime (38963818799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19481909396 + 19481909397.

It is an arithmetic number, because the mean of its divisors is an integer number (19481909397).

Almost surely, 2^38963818793 is an apocalyptic number.

It is an amenable number.

38963818793 is a deficient number, since it is larger than the sum of its proper divisors (1).

38963818793 is an equidigital number, since it uses as much as digits as its factorization.

38963818793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 65.

The spelling of 38963818793 in words is "thirty-eight billion, nine hundred sixty-three million, eight hundred eighteen thousand, seven hundred ninety-three".