30839615993 has 2 divisors, whose sum is σ = 30839615994. Its totient is φ = 30839615992.

The previous prime is 30839615929. The next prime is 30839616007. The reversal of 30839615993 is 39951693803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20462730304 + 10376885689 = 143048^2 + 101867^2 .

It is a cyclic number.

It is not a de Polignac number, because 30839615993 - 2⁶ = 30839615929 is a prime.

It is not a weakly prime, because it can be changed into another prime (30839615693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15419807996 + 15419807997.

It is an arithmetic number, because the mean of its divisors is an integer number (15419807997).

Almost surely, 2^30839615993 is an apocalyptic number.

It is an amenable number.

30839615993 is a deficient number, since it is larger than the sum of its proper divisors (1).

30839615993 is an equidigital number, since it uses as much as digits as its factorization.

30839615993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4723920, while the sum is 56.

The spelling of 30839615993 in words is "thirty billion, eight hundred thirty-nine million, six hundred fifteen thousand, nine hundred ninety-three".