130188109 has 2 divisors, whose sum is σ = 130188110. Its totient is φ = 130188108.

The previous prime is 130188053. The next prime is 130188137. The reversal of 130188109 is 901881031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130188100 + 9 = 11410^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 130188109 - 2⁹ = 130187597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130180109) 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, 65094054 + 65094055.

It is an arithmetic number, because the mean of its divisors is an integer number (65094055).

Almost surely, 2^130188109 is an apocalyptic number.

It is an amenable number.

130188109 is a deficient number, since it is larger than the sum of its proper divisors (1).

130188109 is an equidigital number, since it uses as much as digits as its factorization.

130188109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 130188109 is about 11410.0003943909. Note that the first 3 decimals coincide. The cubic root of 130188109 is about 506.8239231298.

The spelling of 130188109 in words is "one hundred thirty million, one hundred eighty-eight thousand, one hundred nine".