198374143 has 8 divisors (see below), whose sum is σ = 217002240. Its totient is φ = 179845080.

The previous prime is 198374129. The next prime is 198374161. The reversal of 198374143 is 341473891.

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

It is a cyclic number.

It is not a de Polignac number, because 198374143 - 2²¹ = 196276991 is a prime.

It is a super-2 number, since 2×198374143² = 78704601221968898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198374096 and 198374105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198374243) 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, 20533 + ... + 28606.

It is an arithmetic number, because the mean of its divisors is an integer number (27125280).

Almost surely, 2^198374143 is an apocalyptic number.

198374143 is a deficient number, since it is larger than the sum of its proper divisors (18628097).

198374143 is a wasteful number, since it uses less digits than its factorization.

198374143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49517.

The product of its digits is 72576, while the sum is 40.

The square root of 198374143 is about 14084.5355975978. The cubic root of 198374143 is about 583.2145558073.

The spelling of 198374143 in words is "one hundred ninety-eight million, three hundred seventy-four thousand, one hundred forty-three".