198481972223 has 2 divisors, whose sum is σ = 198481972224. Its totient is φ = 198481972222.

The previous prime is 198481972219. The next prime is 198481972243. The reversal of 198481972223 is 322279184891.

It is a weak prime.

It is an emirp because it is prime and its reverse (322279184891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198481972223 - 2² = 198481972219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198481972243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99240986111 + 99240986112.

It is an arithmetic number, because the mean of its divisors is an integer number (99240986112).

Almost surely, 2^198481972223 is an apocalyptic number.

198481972223 is a deficient number, since it is larger than the sum of its proper divisors (1).

198481972223 is an equidigital number, since it uses as much as digits as its factorization.

198481972223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 56.

The spelling of 198481972223 in words is "one hundred ninety-eight billion, four hundred eighty-one million, nine hundred seventy-two thousand, two hundred twenty-three".