198266263441 has 3 divisors (see below), whose sum is σ = 198266708713. Its totient is φ = 198265818170.

The previous prime is 198266263381. The next prime is 198266263451. The reversal of 198266263441 is 144362662891.

The square root of 198266263441 is 445271.

It is a perfect power (a square), and thus also a powerful number.

198266263441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 198266263441 - 2¹⁷ = 198266132369 is a prime.

It is a super-2 number, since 2×198266263441² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198266263451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 222636 + ... + 667906.

Almost surely, 2^198266263441 is an apocalyptic number.

198266263441 is the 445271-st square number.

198266263441 is the 222636-th centered octagonal number.

It is an amenable number.

198266263441 is a deficient number, since it is larger than the sum of its proper divisors (445272).

198266263441 is an frugal number, since it uses more digits than its factorization.

198266263441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890542 (or 445271 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The spelling of 198266263441 in words is "one hundred ninety-eight billion, two hundred sixty-six million, two hundred sixty-three thousand, four hundred forty-one".