198274017 has 4 divisors (see below), whose sum is σ = 264365360. Its totient is φ = 132182676.

The previous prime is 198274003. The next prime is 198274019. The reversal of 198274017 is 710472891.

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.

It is not a de Polignac number, because 198274017 - 2⁴ = 198274001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198274019) 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, 33045667 + ... + 33045672.

It is an arithmetic number, because the mean of its divisors is an integer number (66091340).

Almost surely, 2^198274017 is an apocalyptic number.

It is an amenable number.

198274017 is a deficient number, since it is larger than the sum of its proper divisors (66091343).

198274017 is an equidigital number, since it uses as much as digits as its factorization.

198274017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66091342.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 198274017 is about 14080.9806831769. The cubic root of 198274017 is about 583.1164167267.

The spelling of 198274017 in words is "one hundred ninety-eight million, two hundred seventy-four thousand, seventeen".