130001749 has 2 divisors, whose sum is σ = 130001750. Its totient is φ = 130001748.

The previous prime is 130001731. The next prime is 130001777. The reversal of 130001749 is 947100031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127464100 + 2537649 = 11290^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 130001749 - 2⁵ = 130001717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130001719) 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 as a sum of consecutive naturals, namely, 65000874 + 65000875.

It is an arithmetic number, because the mean of its divisors is an integer number (65000875).

Almost surely, 2^130001749 is an apocalyptic number.

It is an amenable number.

130001749 is a deficient number, since it is larger than the sum of its proper divisors (1).

130001749 is an equidigital number, since it uses as much as digits as its factorization.

130001749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 130001749 is about 11401.8309494572. The cubic root of 130001749 is about 506.5819737150.

The spelling of 130001749 in words is "one hundred thirty million, one thousand, seven hundred forty-nine".