198026359 has 4 divisors (see below), whose sum is σ = 198671704. Its totient is φ = 197381016.

The previous prime is 198026329. The next prime is 198026441. The reversal of 198026359 is 953620891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198026359 - 2⁵ = 198026327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198026329) 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 in 3 ways as a sum of consecutive naturals, for example, 322212 + ... + 322825.

It is an arithmetic number, because the mean of its divisors is an integer number (49667926).

Almost surely, 2^198026359 is an apocalyptic number.

198026359 is a deficient number, since it is larger than the sum of its proper divisors (645345).

198026359 is an equidigital number, since it uses as much as digits as its factorization.

198026359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645344.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 198026359 is about 14072.1838745804. The cubic root of 198026359 is about 582.8735312881.

The spelling of 198026359 in words is "one hundred ninety-eight million, twenty-six thousand, three hundred fifty-nine".