198431848 has 8 divisors (see below), whose sum is σ = 372059730. Its totient is φ = 99215920.

The previous prime is 198431843. The next prime is 198431861. The reversal of 198431848 is 848134891.

It can be written as a sum of positive squares in only one way, i.e., 179613604 + 18818244 = 13402^2 + 4338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 198431798 and 198431807.

It is not an unprimeable number, because it can be changed into a prime (198431843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12401983 + ... + 12401998.

Almost surely, 2^198431848 is an apocalyptic number.

It is an amenable number.

198431848 is a deficient number, since it is larger than the sum of its proper divisors (173627882).

198431848 is a wasteful number, since it uses less digits than its factorization.

198431848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24803987 (or 24803983 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 198431848 is about 14086.5839719926. The cubic root of 198431848 is about 583.2711006988.

The spelling of 198431848 in words is "one hundred ninety-eight million, four hundred thirty-one thousand, eight hundred forty-eight".