30705486893 has 2 divisors, whose sum is σ = 30705486894. Its totient is φ = 30705486892.

The previous prime is 30705486809. The next prime is 30705486901. The reversal of 30705486893 is 39868450703.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30637951369 + 67535524 = 175037^2 + 8218^2 .

It is a cyclic number.

It is not a de Polignac number, because 30705486893 - 2¹⁰ = 30705485869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30705416893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15352743446 + 15352743447.

It is an arithmetic number, because the mean of its divisors is an integer number (15352743447).

Almost surely, 2^30705486893 is an apocalyptic number.

It is an amenable number.

30705486893 is a deficient number, since it is larger than the sum of its proper divisors (1).

30705486893 is an equidigital number, since it uses as much as digits as its factorization.

30705486893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 30705486893 in words is "thirty billion, seven hundred five million, four hundred eighty-six thousand, eight hundred ninety-three".