38263546813 has 2 divisors, whose sum is σ = 38263546814. Its totient is φ = 38263546812.

The previous prime is 38263546693. The next prime is 38263546817. The reversal of 38263546813 is 31864536283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31702870809 + 6560676004 = 178053^2 + 80998^2 .

It is a cyclic number.

It is not a de Polignac number, because 38263546813 - 2⁹ = 38263546301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38263546817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19131773406 + 19131773407.

It is an arithmetic number, because the mean of its divisors is an integer number (19131773407).

Almost surely, 2^38263546813 is an apocalyptic number.

It is an amenable number.

38263546813 is a deficient number, since it is larger than the sum of its proper divisors (1).

38263546813 is an equidigital number, since it uses as much as digits as its factorization.

38263546813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 49.

The spelling of 38263546813 in words is "thirty-eight billion, two hundred sixty-three million, five hundred forty-six thousand, eight hundred thirteen".