1198261 has 2 divisors, whose sum is σ = 1198262. Its totient is φ = 1198260.

The previous prime is 1198259. The next prime is 1198289. The reversal of 1198261 is 1628911.

It is a happy number.

It is an a-pointer prime, because the next prime (1198289) can be obtained adding 1198261 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 53361 = 1070^2 + 231^2 .

It is a cyclic number.

It is not a de Polignac number, because 1198261 - 2¹ = 1198259 is a prime.

Together with 1198259, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1198201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599130 + 599131.

It is an arithmetic number, because the mean of its divisors is an integer number (599131).

2^1198261 is an apocalyptic number.

It is an amenable number.

1198261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198261 is an equidigital number, since it uses as much as digits as its factorization.

1198261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 1198261 is about 1094.6510859630. The cubic root of 1198261 is about 106.2144997894.

The spelling of 1198261 in words is "one million, one hundred ninety-eight thousand, two hundred sixty-one".