197998193 has 8 divisors (see below), whose sum is σ = 199143360. Its totient is φ = 196857040.

The previous prime is 197998189. The next prime is 197998217. The reversal of 197998193 is 391899791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197998193 - 2² = 197998189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197998123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167063 + ... + 168243.

It is an arithmetic number, because the mean of its divisors is an integer number (24892920).

Almost surely, 2^197998193 is an apocalyptic number.

It is an amenable number.

197998193 is a deficient number, since it is larger than the sum of its proper divisors (1145167).

197998193 is a wasteful number, since it uses less digits than its factorization.

197998193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007.

The product of its digits is 1102248, while the sum is 56.

The square root of 197998193 is about 14071.1830703747. The cubic root of 197998193 is about 582.8458952461.

The spelling of 197998193 in words is "one hundred ninety-seven million, nine hundred ninety-eight thousand, one hundred ninety-three".