130678649 has 2 divisors, whose sum is σ = 130678650. Its totient is φ = 130678648.

The previous prime is 130678631. The next prime is 130678673. The reversal of 130678649 is 946876031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73222249 + 57456400 = 8557^2 + 7580^2 .

It is an emirp because it is prime and its reverse (946876031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130678649 - 2⁸ = 130678393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130698649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65339324 + 65339325.

It is an arithmetic number, because the mean of its divisors is an integer number (65339325).

Almost surely, 2^130678649 is an apocalyptic number.

It is an amenable number.

130678649 is a deficient number, since it is larger than the sum of its proper divisors (1).

130678649 is an equidigital number, since it uses as much as digits as its factorization.

130678649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 130678649 is about 11431.4762388766. The cubic root of 130678649 is about 507.4596847297.

The spelling of 130678649 in words is "one hundred thirty million, six hundred seventy-eight thousand, six hundred forty-nine".