198557342 has 16 divisors (see below), whose sum is σ = 305953200. Its totient is φ = 96586560.

The previous prime is 198557341. The next prime is 198557347. The reversal of 198557342 is 243755891.

It is a junction number, because it is equal to n+sod(n) for n = 198557293 and 198557302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198557341) 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, 27884 + ... + 34272.

It is an arithmetic number, because the mean of its divisors is an integer number (19122075).

Almost surely, 2^198557342 is an apocalyptic number.

198557342 is a deficient number, since it is larger than the sum of its proper divisors (107395858).

198557342 is a wasteful number, since it uses less digits than its factorization.

198557342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6811.

The product of its digits is 302400, while the sum is 44.

The square root of 198557342 is about 14091.0376480939. The cubic root of 198557342 is about 583.3940339192.

The spelling of 198557342 in words is "one hundred ninety-eight million, five hundred fifty-seven thousand, three hundred forty-two".