198969963 has 4 divisors (see below), whose sum is σ = 265293288. Its totient is φ = 132646640.

The previous prime is 198969961. The next prime is 198970001. The reversal of 198969963 is 369969891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198969963 - 2¹ = 198969961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198969897 and 198969906.

It is not an unprimeable number, because it can be changed into a prime (198969961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33161658 + ... + 33161663.

It is an arithmetic number, because the mean of its divisors is an integer number (66323322).

Almost surely, 2^198969963 is an apocalyptic number.

198969963 is a deficient number, since it is larger than the sum of its proper divisors (66323325).

198969963 is an equidigital number, since it uses as much as digits as its factorization.

198969963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66323324.

The product of its digits is 5668704, while the sum is 60.

The square root of 198969963 is about 14105.6713062513. The cubic root of 198969963 is about 583.7978703672.

The spelling of 198969963 in words is "one hundred ninety-eight million, nine hundred sixty-nine thousand, nine hundred sixty-three".