38203999993 has 2 divisors, whose sum is σ = 38203999994. Its totient is φ = 38203999992.

The previous prime is 38203999987. The next prime is 38204000011. The reversal of 38203999993 is 39999930283.

38203999993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38070643689 + 133356304 = 195117^2 + 11548^2 .

It is a cyclic number.

It is not a de Polignac number, because 38203999993 - 2⁹ = 38203999481 is a prime.

It is not a weakly prime, because it can be changed into another prime (38203999913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19101999996 + 19101999997.

It is an arithmetic number, because the mean of its divisors is an integer number (19101999997).

Almost surely, 2^38203999993 is an apocalyptic number.

It is an amenable number.

38203999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

38203999993 is an equidigital number, since it uses as much as digits as its factorization.

38203999993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25509168, while the sum is 64.

The spelling of 38203999993 in words is "thirty-eight billion, two hundred three million, nine hundred ninety-nine thousand, nine hundred ninety-three".