198202197 has 4 divisors (see below), whose sum is σ = 264269600. Its totient is φ = 132134796.

The previous prime is 198202183. The next prime is 198202223. The reversal of 198202197 is 791202891.

198202197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 791202891 = 3 ⋅263734297.

It is not a de Polignac number, because 198202197 - 2²⁴ = 181424981 is a prime.

It is a super-2 number, since 2×198202197² = 78568221791253618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198202157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33033697 + ... + 33033702.

It is an arithmetic number, because the mean of its divisors is an integer number (66067400).

Almost surely, 2^198202197 is an apocalyptic number.

It is an amenable number.

198202197 is a deficient number, since it is larger than the sum of its proper divisors (66067403).

198202197 is an equidigital number, since it uses as much as digits as its factorization.

198202197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66067402.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 198202197 is about 14078.4302036839. The cubic root of 198202197 is about 583.0460015856.

The spelling of 198202197 in words is "one hundred ninety-eight million, two hundred two thousand, one hundred ninety-seven".