38724687193 has 2 divisors, whose sum is σ = 38724687194. Its totient is φ = 38724687192.

The previous prime is 38724687149. The next prime is 38724687241. The reversal of 38724687193 is 39178642783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35039347344 + 3685339849 = 187188^2 + 60707^2 .

It is a cyclic number.

It is not a de Polignac number, because 38724687193 - 2⁹ = 38724686681 is a prime.

It is not a weakly prime, because it can be changed into another prime (38724687893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19362343596 + 19362343597.

It is an arithmetic number, because the mean of its divisors is an integer number (19362343597).

Almost surely, 2^38724687193 is an apocalyptic number.

It is an amenable number.

38724687193 is a deficient number, since it is larger than the sum of its proper divisors (1).

38724687193 is an equidigital number, since it uses as much as digits as its factorization.

38724687193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 58.

The spelling of 38724687193 in words is "thirty-eight billion, seven hundred twenty-four million, six hundred eighty-seven thousand, one hundred ninety-three".