198084437 has 2 divisors, whose sum is σ = 198084438. Its totient is φ = 198084436.

The previous prime is 198084377. The next prime is 198084457. The reversal of 198084437 is 734480891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184253476 + 13830961 = 13574^2 + 3719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198084437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198084457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99042218 + 99042219.

It is an arithmetic number, because the mean of its divisors is an integer number (99042219).

Almost surely, 2^198084437 is an apocalyptic number.

It is an amenable number.

198084437 is a deficient number, since it is larger than the sum of its proper divisors (1).

198084437 is an equidigital number, since it uses as much as digits as its factorization.

198084437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 198084437 is about 14074.2472978131. The cubic root of 198084437 is about 582.9305082485.

The spelling of 198084437 in words is "one hundred ninety-eight million, eighty-four thousand, four hundred thirty-seven".