198197793 has 32 divisors (see below), whose sum is σ = 306218880. Its totient is φ = 126584640.

The previous prime is 198197711. The next prime is 198197801. The reversal of 198197793 is 397791891.

It is not a de Polignac number, because 198197793 - 2¹³ = 198189601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198192793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59923 + ... + 63143.

It is an arithmetic number, because the mean of its divisors is an integer number (9569340).

Almost surely, 2^198197793 is an apocalyptic number.

It is an amenable number.

198197793 is a deficient number, since it is larger than the sum of its proper divisors (108021087).

198197793 is a wasteful number, since it uses less digits than its factorization.

198197793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326 (or 3320 counting only the distinct ones).

The product of its digits is 857304, while the sum is 54.

The square root of 198197793 is about 14078.2737933313. The cubic root of 198197793 is about 583.0416831780.

The spelling of 198197793 in words is "one hundred ninety-eight million, one hundred ninety-seven thousand, seven hundred ninety-three".