198540383 has 2 divisors, whose sum is σ = 198540384. Its totient is φ = 198540382.

The previous prime is 198540373. The next prime is 198540389. The reversal of 198540383 is 383045891.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 198540383 - 2²⁰ = 197491807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198540383.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198540389) 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 as a sum of consecutive naturals, namely, 99270191 + 99270192.

It is an arithmetic number, because the mean of its divisors is an integer number (99270192).

Almost surely, 2^198540383 is an apocalyptic number.

198540383 is a deficient number, since it is larger than the sum of its proper divisors (1).

198540383 is an equidigital number, since it uses as much as digits as its factorization.

198540383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 198540383 is about 14090.4358697664. The cubic root of 198540383 is about 583.3774240052.

The spelling of 198540383 in words is "one hundred ninety-eight million, five hundred forty thousand, three hundred eighty-three".