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198000203 is a prime number
BaseRepresentation
bin10111100110100…
…11111001001011
3111210120110012212
423303103321023
5401142001303
631351455335
74622655032
oct1363237113
9453513185
10198000203
11a1847535
125638754b
1332036cab
141c421719
15125b1ad8
hexbcd3e4b

198000203 has 2 divisors, whose sum is σ = 198000204. Its totient is φ = 198000202.

The previous prime is 198000199. The next prime is 198000217. The reversal of 198000203 is 302000891.

It is a weak prime.

It is an emirp because it is prime and its reverse (302000891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198000203 - 22 = 198000199 is a prime.

It is not a weakly prime, because it can be changed into another prime (198000233) 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, 99000101 + 99000102.

It is an arithmetic number, because the mean of its divisors is an integer number (99000102).

Almost surely, 2198000203 is an apocalyptic number.

198000203 is a deficient number, since it is larger than the sum of its proper divisors (1).

198000203 is an equidigital number, since it uses as much as digits as its factorization.

198000203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 198000203 is about 14071.2544927593. The cubic root of 198000203 is about 582.8478675138.

The spelling of 198000203 in words is "one hundred ninety-eight million, two hundred three", and thus it is an aban number.