130173649 has 2 divisors, whose sum is σ = 130173650. Its totient is φ = 130173648.

The previous prime is 130173623. The next prime is 130173689. The reversal of 130173649 is 946371031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109307025 + 20866624 = 10455^2 + 4568^2 .

It is a cyclic number.

It is not a de Polignac number, because 130173649 - 2⁹ = 130173137 is a prime.

It is equal to p_7387432 and since 130173649 and 7387432 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (130173689) 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, 65086824 + 65086825.

It is an arithmetic number, because the mean of its divisors is an integer number (65086825).

Almost surely, 2^130173649 is an apocalyptic number.

It is an amenable number.

130173649 is a deficient number, since it is larger than the sum of its proper divisors (1).

130173649 is an equidigital number, since it uses as much as digits as its factorization.

130173649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 130173649 is about 11409.3667221279. The cubic root of 130173649 is about 506.8051581153.

The spelling of 130173649 in words is "one hundred thirty million, one hundred seventy-three thousand, six hundred forty-nine".