198602387 has 2 divisors, whose sum is σ = 198602388. Its totient is φ = 198602386.

The previous prime is 198602377. The next prime is 198602429. The reversal of 198602387 is 783206891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198602387 - 2⁶ = 198602323 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198602377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99301193 + 99301194.

It is an arithmetic number, because the mean of its divisors is an integer number (99301194).

Almost surely, 2^198602387 is an apocalyptic number.

198602387 is a deficient number, since it is larger than the sum of its proper divisors (1).

198602387 is an equidigital number, since it uses as much as digits as its factorization.

198602387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 198602387 is about 14092.6359138381. The cubic root of 198602387 is about 583.4381471160.

The spelling of 198602387 in words is "one hundred ninety-eight million, six hundred two thousand, three hundred eighty-seven".