198237461 has 2 divisors, whose sum is σ = 198237462. Its totient is φ = 198237460.

The previous prime is 198237451. The next prime is 198237499. The reversal of 198237461 is 164732891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125664100 + 72573361 = 11210^2 + 8519^2 .

It is a cyclic number.

It is not a de Polignac number, because 198237461 - 2²⁶ = 131128597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198237451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99118730 + 99118731.

It is an arithmetic number, because the mean of its divisors is an integer number (99118731).

Almost surely, 2^198237461 is an apocalyptic number.

It is an amenable number.

198237461 is a deficient number, since it is larger than the sum of its proper divisors (1).

198237461 is an equidigital number, since it uses as much as digits as its factorization.

198237461 is an odious number, because the sum of its binary digits is odd.

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

The square root of 198237461 is about 14079.6825603420. The cubic root of 198237461 is about 583.0805779177.

The spelling of 198237461 in words is "one hundred ninety-eight million, two hundred thirty-seven thousand, four hundred sixty-one".