198274441 has 2 divisors, whose sum is σ = 198274442. Its totient is φ = 198274440.

The previous prime is 198274423. The next prime is 198274457. The reversal of 198274441 is 144472891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193098816 + 5175625 = 13896^2 + 2275^2 .

It is an emirp because it is prime and its reverse (144472891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198274441 - 2⁵ = 198274409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198274394 and 198274403.

It is not a weakly prime, because it can be changed into another prime (198274411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99137220 + 99137221.

It is an arithmetic number, because the mean of its divisors is an integer number (99137221).

Almost surely, 2^198274441 is an apocalyptic number.

It is an amenable number.

198274441 is a deficient number, since it is larger than the sum of its proper divisors (1).

198274441 is an equidigital number, since it uses as much as digits as its factorization.

198274441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 198274441 is about 14080.9957389384. The cubic root of 198274441 is about 583.1168323824.

The spelling of 198274441 in words is "one hundred ninety-eight million, two hundred seventy-four thousand, four hundred forty-one".