198398351 has 8 divisors (see below), whose sum is σ = 199454400. Its totient is φ = 197345920.

The previous prime is 198398339. The next prime is 198398377. The reversal of 198398351 is 153893891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198398351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198398296 and 198398305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198397351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244835 + ... + 245643.

It is an arithmetic number, because the mean of its divisors is an integer number (24931800).

Almost surely, 2^198398351 is an apocalyptic number.

198398351 is a deficient number, since it is larger than the sum of its proper divisors (1056049).

198398351 is an equidigital number, since it uses as much as digits as its factorization.

198398351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809.

The product of its digits is 233280, while the sum is 47.

The square root of 198398351 is about 14085.3949536390. The cubic root of 198398351 is about 583.2382784616.

The spelling of 198398351 in words is "one hundred ninety-eight million, three hundred ninety-eight thousand, three hundred fifty-one".