198142823 has 8 divisors (see below), whose sum is σ = 203945280. Its totient is φ = 192422880.

The previous prime is 198142799. The next prime is 198142883. The reversal of 198142823 is 328241891.

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 198142823 - 2⁶ = 198142759 is a prime.

It is a super-3 number, since 3×198142823³ (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 (198142883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15740 + ... + 25377.

It is an arithmetic number, because the mean of its divisors is an integer number (25493160).

Almost surely, 2^198142823 is an apocalyptic number.

198142823 is a deficient number, since it is larger than the sum of its proper divisors (5802457).

198142823 is an equidigital number, since it uses as much as digits as its factorization.

198142823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41257.

The product of its digits is 27648, while the sum is 38.

The square root of 198142823 is about 14076.3213589347. The cubic root of 198142823 is about 582.9877761452.

The spelling of 198142823 in words is "one hundred ninety-eight million, one hundred forty-two thousand, eight hundred twenty-three".