198021962252 has 24 divisors (see below), whose sum is σ = 351679391280. Its totient is φ = 97550055680.

The previous prime is 198021962231. The next prime is 198021962311. The reversal of 198021962252 is 252269120891.

198021962252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 198021962197 and 198021962206.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 889718 + ... + 1089789.

It is an arithmetic number, because the mean of its divisors is an integer number (14653307970).

Almost surely, 2^198021962252 is an apocalyptic number.

It is an amenable number.

198021962252 is a deficient number, since it is larger than the sum of its proper divisors (153657429028).

198021962252 is a wasteful number, since it uses less digits than its factorization.

198021962252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979881 (or 1979879 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 198021962252 in words is "one hundred ninety-eight billion, twenty-one million, nine hundred sixty-two thousand, two hundred fifty-two".