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199998193 is a prime number
BaseRepresentation
bin10111110101110…
…11101011110001
3111221022221221111
423322323223301
5402144420233
631502353321
74645646053
oct1372735361
9457287844
10199998193
11a299166a
1256b8b841
1332586535
141c7c18d3
1512858acd
hexbebbaf1

199998193 has 2 divisors, whose sum is σ = 199998194. Its totient is φ = 199998192.

The previous prime is 199998187. The next prime is 199998221. The reversal of 199998193 is 391899991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114768369 + 85229824 = 10713^2 + 9232^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-199998193 is a prime.

It is not a weakly prime, because it can be changed into another prime (199998893) 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, 99999096 + 99999097.

It is an arithmetic number, because the mean of its divisors is an integer number (99999097).

Almost surely, 2199998193 is an apocalyptic number.

It is an amenable number.

199998193 is a deficient number, since it is larger than the sum of its proper divisors (1).

199998193 is an equidigital number, since it uses as much as digits as its factorization.

199998193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417176, while the sum is 58.

The square root of 199998193 is about 14142.0717364890. The cubic root of 199998193 is about 584.8017864039.

The spelling of 199998193 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, one hundred ninety-three".