198902419066 has 16 divisors (see below), whose sum is σ = 340204138344. Its totient is φ = 86401050624.

The previous prime is 198902419063. The next prime is 198902419099. The reversal of 198902419066 is 660914209891.

198902419066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 102691407025 + 96211012041 = 320455^2 + 310179^2 .

It is a junction number, because it is equal to n+sod(n) for n = 198902418998 and 198902419016.

It is not an unprimeable number, because it can be changed into a prime (198902419063) 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 in 7 ways as a sum of consecutive naturals, for example, 225002295 + ... + 225003178.

Almost surely, 2^198902419066 is an apocalyptic number.

198902419066 is a deficient number, since it is larger than the sum of its proper divisors (141301719278).

198902419066 is a wasteful number, since it uses less digits than its factorization.

198902419066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450005505.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 198902419066 in words is "one hundred ninety-eight billion, nine hundred two million, four hundred nineteen thousand, sixty-six".