130438661 has 2 divisors, whose sum is σ = 130438662. Its totient is φ = 130438660.

The previous prime is 130438643. The next prime is 130438691. The reversal of 130438661 is 166834031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96157636 + 34281025 = 9806^2 + 5855^2 .

It is a cyclic number.

It is not a de Polignac number, because 130438661 - 2¹⁴ = 130422277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130438601) 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, 65219330 + 65219331.

It is an arithmetic number, because the mean of its divisors is an integer number (65219331).

Almost surely, 2^130438661 is an apocalyptic number.

It is an amenable number.

130438661 is a deficient number, since it is larger than the sum of its proper divisors (1).

130438661 is an equidigital number, since it uses as much as digits as its factorization.

130438661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 130438661 is about 11420.9746081497. The cubic root of 130438661 is about 507.1488487895.

The spelling of 130438661 in words is "one hundred thirty million, four hundred thirty-eight thousand, six hundred sixty-one".