198137343 has 4 divisors (see below), whose sum is σ = 264183128. Its totient is φ = 132091560.

The previous prime is 198137327. The next prime is 198137353. The reversal of 198137343 is 343731891.

It is a happy number.

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

It is not a de Polignac number, because 198137343 - 2⁴ = 198137327 is a prime.

It is a super-3 number, since 3×198137343³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198137353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33022888 + ... + 33022893.

It is an arithmetic number, because the mean of its divisors is an integer number (66045782).

Almost surely, 2^198137343 is an apocalyptic number.

198137343 is a deficient number, since it is larger than the sum of its proper divisors (66045785).

198137343 is an equidigital number, since it uses as much as digits as its factorization.

198137343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66045784.

The product of its digits is 54432, while the sum is 39.

The square root of 198137343 is about 14076.1267044596. The cubic root of 198137343 is about 582.9824015667.

The spelling of 198137343 in words is "one hundred ninety-eight million, one hundred thirty-seven thousand, three hundred forty-three".