130635409 has 2 divisors, whose sum is σ = 130635410. Its totient is φ = 130635408.

The previous prime is 130635403. The next prime is 130635481. The reversal of 130635409 is 904536031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86545809 + 44089600 = 9303^2 + 6640^2 .

It is a cyclic number.

It is not a de Polignac number, because 130635409 - 2¹¹ = 130633361 is a prime.

It is a super-2 number, since 2×130635409² = 34131220169194562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130635403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65317704 + 65317705.

It is an arithmetic number, because the mean of its divisors is an integer number (65317705).

Almost surely, 2^130635409 is an apocalyptic number.

It is an amenable number.

130635409 is a deficient number, since it is larger than the sum of its proper divisors (1).

130635409 is an equidigital number, since it uses as much as digits as its factorization.

130635409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 130635409 is about 11429.5848131067. The cubic root of 130635409 is about 507.4037077777.

It can be divided in two parts, 130635 and 409, that added together give a square (131044 = 362²).

The spelling of 130635409 in words is "one hundred thirty million, six hundred thirty-five thousand, four hundred nine".