198904885 has 16 divisors (see below), whose sum is σ = 244981440. Its totient is φ = 154949760.

The previous prime is 198904883. The next prime is 198904921. The reversal of 198904885 is 588409891.

It is not a de Polignac number, because 198904885 - 2¹ = 198904883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198904883) 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, 80265 + ... + 82705.

It is an arithmetic number, because the mean of its divisors is an integer number (15311340).

Almost surely, 2^198904885 is an apocalyptic number.

It is an amenable number.

198904885 is a deficient number, since it is larger than the sum of its proper divisors (46076555).

198904885 is a wasteful number, since it uses less digits than its factorization.

198904885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2868.

The product of its (nonzero) digits is 829440, while the sum is 52.

The square root of 198904885 is about 14103.3643149427. The cubic root of 198904885 is about 583.7342149623.

The spelling of 198904885 in words is "one hundred ninety-eight million, nine hundred four thousand, eight hundred eighty-five".