130506489 has 6 divisors (see below), whose sum is σ = 188509386. Its totient is φ = 87004320.

The previous prime is 130506487. The next prime is 130506503. The reversal of 130506489 is 984605031.

130506489 is a `hidden beast` number, since 1 + 3 + 0 + 5 + 0 + 648 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 77580864 + 52925625 = 8808^2 + 7275^2 .

It is not a de Polignac number, because 130506489 - 2¹ = 130506487 is a prime.

It is a super-2 number, since 2×130506489² = 34063887342214242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (130506487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7250352 + ... + 7250369.

It is an arithmetic number, because the mean of its divisors is an integer number (31418231).

Almost surely, 2^130506489 is an apocalyptic number.

It is an amenable number.

130506489 is a deficient number, since it is larger than the sum of its proper divisors (58002897).

130506489 is a wasteful number, since it uses less digits than its factorization.

130506489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14500727 (or 14500724 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 130506489 is about 11423.9436710796. The cubic root of 130506489 is about 507.2367392230.

The spelling of 130506489 in words is "one hundred thirty million, five hundred six thousand, four hundred eighty-nine".