30885658493 has 2 divisors, whose sum is σ = 30885658494. Its totient is φ = 30885658492.

The previous prime is 30885658477. The next prime is 30885658501. The reversal of 30885658493 is 39485658803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27088880569 + 3796777924 = 164587^2 + 61618^2 .

It is an emirp because it is prime and its reverse (39485658803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30885658493 - 2⁴ = 30885658477 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 (30885658693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15442829246 + 15442829247.

It is an arithmetic number, because the mean of its divisors is an integer number (15442829247).

Almost surely, 2^30885658493 is an apocalyptic number.

It is an amenable number.

30885658493 is a deficient number, since it is larger than the sum of its proper divisors (1).

30885658493 is an equidigital number, since it uses as much as digits as its factorization.

30885658493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24883200, while the sum is 59.

The spelling of 30885658493 in words is "thirty billion, eight hundred eighty-five million, six hundred fifty-eight thousand, four hundred ninety-three".