198370429 has 2 divisors, whose sum is σ = 198370430. Its totient is φ = 198370428.

The previous prime is 198370427. The next prime is 198370439. The reversal of 198370429 is 924073891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146458404 + 51912025 = 12102^2 + 7205^2 .

It is a cyclic number.

It is not a de Polignac number, because 198370429 - 2¹ = 198370427 is a prime.

Together with 198370427, 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 (198370421) 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, 99185214 + 99185215.

It is an arithmetic number, because the mean of its divisors is an integer number (99185215).

Almost surely, 2^198370429 is an apocalyptic number.

It is an amenable number.

198370429 is a deficient number, since it is larger than the sum of its proper divisors (1).

198370429 is an equidigital number, since it uses as much as digits as its factorization.

198370429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 198370429 is about 14084.4037502480. The cubic root of 198370429 is about 583.2109160984.

The spelling of 198370429 in words is "one hundred ninety-eight million, three hundred seventy thousand, four hundred twenty-nine".