198180052682 has 4 divisors (see below), whose sum is σ = 297270079026. Its totient is φ = 99090026340.

The previous prime is 198180052663. The next prime is 198180052699. The reversal of 198180052682 is 286250081891.

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., 162367896601 + 35812156081 = 402949^2 + 189241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198180052682.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49545013169 + ... + 49545013172.

Almost surely, 2^198180052682 is an apocalyptic number.

198180052682 is a deficient number, since it is larger than the sum of its proper divisors (99090026344).

198180052682 is an equidigital number, since it uses as much as digits as its factorization.

198180052682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99090026343.

The product of its (nonzero) digits is 552960, while the sum is 50.

The spelling of 198180052682 in words is "one hundred ninety-eight billion, one hundred eighty million, fifty-two thousand, six hundred eighty-two".