198274361 has 2 divisors, whose sum is σ = 198274362. Its totient is φ = 198274360.

The previous prime is 198274343. The next prime is 198274369. The reversal of 198274361 is 163472891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112360000 + 85914361 = 10600^2 + 9269^2 .

It is a cyclic number.

It is not a de Polignac number, because 198274361 - 2¹⁰ = 198273337 is a prime.

It is equal to p_10988573 and since 198274361 and 10988573 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (198274369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99137180 + 99137181.

It is an arithmetic number, because the mean of its divisors is an integer number (99137181).

Almost surely, 2^198274361 is an apocalyptic number.

It is an amenable number.

198274361 is a deficient number, since it is larger than the sum of its proper divisors (1).

198274361 is an equidigital number, since it uses as much as digits as its factorization.

198274361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 198274361 is about 14080.9928982299. The cubic root of 198274361 is about 583.1167539569.

The spelling of 198274361 in words is "one hundred ninety-eight million, two hundred seventy-four thousand, three hundred sixty-one".