30748794137 has 2 divisors, whose sum is σ = 30748794138. Its totient is φ = 30748794136.

The previous prime is 30748794113. The next prime is 30748794143. The reversal of 30748794137 is 73149784703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21591069721 + 9157724416 = 146939^2 + 95696^2 .

It is an emirp because it is prime and its reverse (73149784703) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30748794137 - 2¹² = 30748790041 is a prime.

It is not a weakly prime, because it can be changed into another prime (30744794137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15374397068 + 15374397069.

It is an arithmetic number, because the mean of its divisors is an integer number (15374397069).

Almost surely, 2^30748794137 is an apocalyptic number.

It is an amenable number.

30748794137 is a deficient number, since it is larger than the sum of its proper divisors (1).

30748794137 is an equidigital number, since it uses as much as digits as its factorization.

30748794137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 30748794137 in words is "thirty billion, seven hundred forty-eight million, seven hundred ninety-four thousand, one hundred thirty-seven".