1298198413 has 2 divisors, whose sum is σ = 1298198414. Its totient is φ = 1298198412.

The previous prime is 1298198357. The next prime is 1298198497. The reversal of 1298198413 is 3148918921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1218149604 + 80048809 = 34902^2 + 8947^2 .

It is an emirp because it is prime and its reverse (3148918921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1298198413 - 2¹³ = 1298190221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1298198113) 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, 649099206 + 649099207.

It is an arithmetic number, because the mean of its divisors is an integer number (649099207).

Almost surely, 2^1298198413 is an apocalyptic number.

It is an amenable number.

1298198413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1298198413 is an equidigital number, since it uses as much as digits as its factorization.

1298198413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 46.

The square root of 1298198413 is about 36030.5205763114. The cubic root of 1298198413 is about 1090.8884860803. Note that the first 3 decimals are identical.

The spelling of 1298198413 in words is "one billion, two hundred ninety-eight million, one hundred ninety-eight thousand, four hundred thirteen".