198229920802 has 4 divisors (see below), whose sum is σ = 297344881206. Its totient is φ = 99114960400.

The previous prime is 198229920787. The next prime is 198229920869. The reversal of 198229920802 is 208029922891.

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

It can be written as a sum of positive squares in only one way, i.e., 99381932001 + 98847988801 = 315249^2 + 314401^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198229920802.

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 as a sum of consecutive naturals, namely, 49557480199 + ... + 49557480202.

Almost surely, 2^198229920802 is an apocalyptic number.

198229920802 is a deficient number, since it is larger than the sum of its proper divisors (99114960404).

198229920802 is an equidigital number, since it uses as much as digits as its factorization.

198229920802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99114960403.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 198229920802 in words is "one hundred ninety-eight billion, two hundred twenty-nine million, nine hundred twenty thousand, eight hundred two".