198806943 has 16 divisors (see below), whose sum is σ = 268537856. Its totient is φ = 130818240.

The previous prime is 198806941. The next prime is 198806947. The reversal of 198806943 is 349608891.

It is not a de Polignac number, because 198806943 - 2¹ = 198806941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198806892 and 198806901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198806941) 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, 79155 + ... + 81627.

It is an arithmetic number, because the mean of its divisors is an integer number (16783616).

Almost surely, 2^198806943 is an apocalyptic number.

198806943 is a deficient number, since it is larger than the sum of its proper divisors (69730913).

198806943 is a wasteful number, since it uses less digits than its factorization.

198806943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 198806943 is about 14099.8915953280. The cubic root of 198806943 is about 583.6383877817.

The spelling of 198806943 in words is "one hundred ninety-eight million, eight hundred six thousand, nine hundred forty-three".