130170509 has 12 divisors (see below), whose sum is σ = 151780284. Its totient is φ = 111311424.

The previous prime is 130170499. The next prime is 130170533. The reversal of 130170509 is 905071031.

It can be written as a sum of positive squares in 2 ways, for example, as 102313225 + 27857284 = 10115^2 + 5278^2 .

It is a de Polignac number, because none of the positive numbers 2^k-130170509 is a prime.

It is a super-2 number, since 2×130170509² = 33888722826638162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130170569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19487 + ... + 25299.

It is an arithmetic number, because the mean of its divisors is an integer number (12648357).

Almost surely, 2^130170509 is an apocalyptic number.

It is an amenable number.

130170509 is a deficient number, since it is larger than the sum of its proper divisors (21609775).

130170509 is an equidigital number, since it uses as much as digits as its factorization.

130170509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6284 (or 6277 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 130170509 is about 11409.2291150629. The cubic root of 130170509 is about 506.8010830945.

The spelling of 130170509 in words is "one hundred thirty million, one hundred seventy thousand, five hundred nine".