1300000049 has 2 divisors, whose sum is σ = 1300000050. Its totient is φ = 1300000048.

The previous prime is 1300000021. The next prime is 1300000073. The reversal of 1300000049 is 9400000031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1187491600 + 112508449 = 34460^2 + 10607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300000049 - 2⁸ = 1299999793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1299999982 and 1300000036.

It is not a weakly prime, because it can be changed into another prime (1300030049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650000024 + 650000025.

It is an arithmetic number, because the mean of its divisors is an integer number (650000025).

Almost surely, 2^1300000049 is an apocalyptic number.

It is an amenable number.

1300000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1300000049 is an equidigital number, since it uses as much as digits as its factorization.

1300000049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1300000049 is about 36055.5134341476. The cubic root of 1300000049 is about 1091.3928967735.

The spelling of 1300000049 in words is "one billion, three hundred million, forty-nine", and thus it is an aban number.