130249109 has 2 divisors, whose sum is σ = 130249110. Its totient is φ = 130249108.

The previous prime is 130249103. The next prime is 130249151. The reversal of 130249109 is 901942031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130188100 + 61009 = 11410^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 130249109 - 2¹² = 130245013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130249103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65124554 + 65124555.

It is an arithmetic number, because the mean of its divisors is an integer number (65124555).

Almost surely, 2^130249109 is an apocalyptic number.

It is an amenable number.

130249109 is a deficient number, since it is larger than the sum of its proper divisors (1).

130249109 is an equidigital number, since it uses as much as digits as its factorization.

130249109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 130249109 is about 11412.6731750278. The cubic root of 130249109 is about 506.9030686887.

The spelling of 130249109 in words is "one hundred thirty million, two hundred forty-nine thousand, one hundred nine".