198955281 has 16 divisors (see below), whose sum is σ = 310221824. Its totient is φ = 111044304.

The previous prime is 198955271. The next prime is 198955297. The reversal of 198955281 is 182559891.

It is not a de Polignac number, because 198955281 - 2¹⁴ = 198938897 is a prime.

It is a super-2 number, since 2×198955281² = 79166407675577922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 198955281.

It is not an unprimeable number, because it can be changed into a prime (198955261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109261 + ... + 111066.

It is an arithmetic number, because the mean of its divisors is an integer number (19388864).

Almost surely, 2^198955281 is an apocalyptic number.

It is an amenable number.

198955281 is a deficient number, since it is larger than the sum of its proper divisors (111266543).

198955281 is a wasteful number, since it uses less digits than its factorization.

198955281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220380.

The product of its digits is 259200, while the sum is 48.

The square root of 198955281 is about 14105.1508676795. The cubic root of 198955281 is about 583.7835105261.

The spelling of 198955281 in words is "one hundred ninety-eight million, nine hundred fifty-five thousand, two hundred eighty-one".