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998338813 is a prime number
BaseRepresentation
bin111011100000010…
…111000011111101
32120120112212101121
4323200113003331
54021033320223
6243021510541
733511511533
oct7340270375
92516485347
10998338813
114725997aa
1223a412451
1312baa8034
1496838153
155c9a415d
hex3b8170fd

998338813 has 2 divisors, whose sum is σ = 998338814. Its totient is φ = 998338812.

The previous prime is 998338811. The next prime is 998338819. The reversal of 998338813 is 318833899.

998338813 is nontrivially palindromic in base 7.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 849547609 + 148791204 = 29147^2 + 12198^2 .

It is a cyclic number.

It is not a de Polignac number, because 998338813 - 21 = 998338811 is a prime.

Together with 998338811, it forms a pair of twin primes.

It is the 31597-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998338811) by changing a digit.

It is a nontrivial repunit in base 31596.

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, 499169406 + 499169407.

It is an arithmetic number, because the mean of its divisors is an integer number (499169407).

Almost surely, 2998338813 is an apocalyptic number.

It is an amenable number.

998338813 is a deficient number, since it is larger than the sum of its proper divisors (1).

998338813 is an equidigital number, since it uses as much as digits as its factorization.

998338813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 52.

The square root of 998338813 is about 31596.5000118684. The cubic root of 998338813 is about 999.4459641009.

The spelling of 998338813 in words is "nine hundred ninety-eight million, three hundred thirty-eight thousand, eight hundred thirteen".