198400159 has 2 divisors, whose sum is σ = 198400160. Its totient is φ = 198400158.

The previous prime is 198400157. The next prime is 198400171. The reversal of 198400159 is 951004891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198400159 - 2¹ = 198400157 is a prime.

Together with 198400157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198400157) 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, 99200079 + 99200080.

It is an arithmetic number, because the mean of its divisors is an integer number (99200080).

Almost surely, 2^198400159 is an apocalyptic number.

198400159 is a deficient number, since it is larger than the sum of its proper divisors (1).

198400159 is an equidigital number, since it uses as much as digits as its factorization.

198400159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 198400159 is about 14085.4591334468. The cubic root of 198400159 is about 583.2400501357.

The spelling of 198400159 in words is "one hundred ninety-eight million, four hundred thousand, one hundred fifty-nine".