198384821707 has 2 divisors, whose sum is σ = 198384821708. Its totient is φ = 198384821706.

The previous prime is 198384821653. The next prime is 198384821711. The reversal of 198384821707 is 707128483891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198384821707 is a prime.

It is not a weakly prime, because it can be changed into another prime (198384821737) 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, 99192410853 + 99192410854.

It is an arithmetic number, because the mean of its divisors is an integer number (99192410854).

Almost surely, 2^198384821707 is an apocalyptic number.

198384821707 is a deficient number, since it is larger than the sum of its proper divisors (1).

198384821707 is an equidigital number, since it uses as much as digits as its factorization.

198384821707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5419008, while the sum is 58.

The spelling of 198384821707 in words is "one hundred ninety-eight billion, three hundred eighty-four million, eight hundred twenty-one thousand, seven hundred seven".