198321354309 has 32 divisors (see below), whose sum is σ = 287604244480. Its totient is φ = 120832834752.

The previous prime is 198321354299. The next prime is 198321354401. The reversal of 198321354309 is 903453123891.

It is not a de Polignac number, because 198321354309 - 2¹³ = 198321346117 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 (198321359309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2371002 + ... + 2453220.

It is an arithmetic number, because the mean of its divisors is an integer number (8987632640).

Almost surely, 2^198321354309 is an apocalyptic number.

It is an amenable number.

198321354309 is a deficient number, since it is larger than the sum of its proper divisors (89282890171).

198321354309 is a wasteful number, since it uses less digits than its factorization.

198321354309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82849.

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 198321354309 in words is "one hundred ninety-eight billion, three hundred twenty-one million, three hundred fifty-four thousand, three hundred nine".