38642730293 has 2 divisors, whose sum is σ = 38642730294. Its totient is φ = 38642730292.

The previous prime is 38642730257. The next prime is 38642730349. The reversal of 38642730293 is 39203724683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29096854084 + 9545876209 = 170578^2 + 97703^2 .

It is an emirp because it is prime and its reverse (39203724683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38642730293 - 2⁸ = 38642730037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38642730223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19321365146 + 19321365147.

It is an arithmetic number, because the mean of its divisors is an integer number (19321365147).

Almost surely, 2^38642730293 is an apocalyptic number.

It is an amenable number.

38642730293 is a deficient number, since it is larger than the sum of its proper divisors (1).

38642730293 is an equidigital number, since it uses as much as digits as its factorization.

38642730293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 47.

The spelling of 38642730293 in words is "thirty-eight billion, six hundred forty-two million, seven hundred thirty thousand, two hundred ninety-three".