130193993 has 2 divisors, whose sum is σ = 130193994. Its totient is φ = 130193992.

The previous prime is 130193989. The next prime is 130194011. The reversal of 130193993 is 399391031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130142464 + 51529 = 11408^2 + 227^2 .

It is a cyclic number.

It is not a de Polignac number, because 130193993 - 2² = 130193989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (130198993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65096996 + 65096997.

It is an arithmetic number, because the mean of its divisors is an integer number (65096997).

Almost surely, 2^130193993 is an apocalyptic number.

It is an amenable number.

130193993 is a deficient number, since it is larger than the sum of its proper divisors (1).

130193993 is an equidigital number, since it uses as much as digits as its factorization.

130193993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19683, while the sum is 38.

The square root of 130193993 is about 11410.2582354651. The cubic root of 130193993 is about 506.8315585098.

The spelling of 130193993 in words is "one hundred thirty million, one hundred ninety-three thousand, nine hundred ninety-three".