198912341 has 2 divisors, whose sum is σ = 198912342. Its totient is φ = 198912340.

The previous prime is 198912331. The next prime is 198912379. The reversal of 198912341 is 143219891.

It is an a-pointer prime, because the next prime (198912379) can be obtained adding 198912341 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193488100 + 5424241 = 13910^2 + 2329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198912341 is a prime.

It is a super-2 number, since 2×198912341² = 79132238804200562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 198912295 and 198912304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198912331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99456170 + 99456171.

It is an arithmetic number, because the mean of its divisors is an integer number (99456171).

Almost surely, 2^198912341 is an apocalyptic number.

It is an amenable number.

198912341 is a deficient number, since it is larger than the sum of its proper divisors (1).

198912341 is an equidigital number, since it uses as much as digits as its factorization.

198912341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 38.

The square root of 198912341 is about 14103.6286465576. The cubic root of 198912341 is about 583.7415086795.

The spelling of 198912341 in words is "one hundred ninety-eight million, nine hundred twelve thousand, three hundred forty-one".