198646367379 has 4 divisors (see below), whose sum is σ = 264861823176. Its totient is φ = 132430911584.

The previous prime is 198646367377. The next prime is 198646367383. The reversal of 198646367379 is 973763646891.

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 198646367379 - 2¹ = 198646367377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198646367371) 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, 33107727894 + ... + 33107727899.

It is an arithmetic number, because the mean of its divisors is an integer number (66215455794).

Almost surely, 2^198646367379 is an apocalyptic number.

198646367379 is a deficient number, since it is larger than the sum of its proper divisors (66215455797).

198646367379 is an equidigital number, since it uses as much as digits as its factorization.

198646367379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66215455796.

The product of its digits is 246903552, while the sum is 69.

The spelling of 198646367379 in words is "one hundred ninety-eight billion, six hundred forty-six million, three hundred sixty-seven thousand, three hundred seventy-nine".