201170198 has 4 divisors (see below), whose sum is σ = 301755300. Its totient is φ = 100585098.

The previous prime is 201170173. The next prime is 201170201. The reversal of 201170198 is 891071102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 891071102 = 2 ⋅445535551.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201170198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50292548 + ... + 50292551.

It is an arithmetic number, because the mean of its divisors is an integer number (75438825).

Almost surely, 2^201170198 is an apocalyptic number.

201170198 is a deficient number, since it is larger than the sum of its proper divisors (100585102).

201170198 is a wasteful number, since it uses less digits than its factorization.

201170198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100585101.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 201170198 is about 14183.4480293051. The cubic root of 201170198 is about 585.9418902801.

The spelling of 201170198 in words is "two hundred one million, one hundred seventy thousand, one hundred ninety-eight".