198506149043333 has 2 divisors, whose sum is σ = 198506149043334. Its totient is φ = 198506149043332.

The previous prime is 198506149043327. The next prime is 198506149043393. The reversal of 198506149043333 is 333340941605891.

198506149043333 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140416859456644 + 58089289586689 = 11849762^2 + 7621633^2 .

It is a cyclic number.

It is not a de Polignac number, because 198506149043333 - 2⁸ = 198506149043077 is a prime.

It is a super-2 number, since 2×198506149043333² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198506149043303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99253074521666 + 99253074521667.

It is an arithmetic number, because the mean of its divisors is an integer number (99253074521667).

Almost surely, 2^{198506149043333} is an apocalyptic number.

It is an amenable number.

198506149043333 is a deficient number, since it is larger than the sum of its proper divisors (1).

198506149043333 is an equidigital number, since it uses as much as digits as its factorization.

198506149043333 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25194240, while the sum is 59.

The spelling of 198506149043333 in words is "one hundred ninety-eight trillion, five hundred six billion, one hundred forty-nine million, forty-three thousand, three hundred thirty-three".