198361339 has 16 divisors (see below), whose sum is σ = 220985856. Its totient is φ = 176536800.

The previous prime is 198361333. The next prime is 198361381. The reversal of 198361339 is 933163891.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-198361339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198361295 and 198361304.

It is not an unprimeable number, because it can be changed into a prime (198361333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132654 + ... + 134140.

It is an arithmetic number, because the mean of its divisors is an integer number (13811616).

Almost surely, 2^198361339 is an apocalyptic number.

198361339 is a deficient number, since it is larger than the sum of its proper divisors (22624517).

198361339 is a wasteful number, since it uses less digits than its factorization.

198361339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746.

The product of its digits is 104976, while the sum is 43.

The square root of 198361339 is about 14084.0810491846. The cubic root of 198361339 is about 583.2020077340.

The spelling of 198361339 in words is "one hundred ninety-eight million, three hundred sixty-one thousand, three hundred thirty-nine".