30742923793 has 2 divisors, whose sum is σ = 30742923794. Its totient is φ = 30742923792.

The previous prime is 30742923791. The next prime is 30742923829. The reversal of 30742923793 is 39732924703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20906846464 + 9836077329 = 144592^2 + 99177^2 .

It is an emirp because it is prime and its reverse (39732924703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30742923793 - 2¹ = 30742923791 is a prime.

Together with 30742923791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (30742923791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15371461896 + 15371461897.

It is an arithmetic number, because the mean of its divisors is an integer number (15371461897).

Almost surely, 2^30742923793 is an apocalyptic number.

It is an amenable number.

30742923793 is a deficient number, since it is larger than the sum of its proper divisors (1).

30742923793 is an equidigital number, since it uses as much as digits as its factorization.

30742923793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 49.

The spelling of 30742923793 in words is "thirty billion, seven hundred forty-two million, nine hundred twenty-three thousand, seven hundred ninety-three".