1180549 has 2 divisors, whose sum is σ = 1180550. Its totient is φ = 1180548.

The previous prime is 1180547. The next prime is 1180577. The reversal of 1180549 is 9450811.

It is a happy number.

It is an a-pointer prime, because the next prime (1180577) can be obtained adding 1180549 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., 964324 + 216225 = 982^2 + 465^2 .

It is an emirp because it is prime and its reverse (9450811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1180549 - 2¹ = 1180547 is a prime.

Together with 1180547, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1180547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590274 + 590275.

It is an arithmetic number, because the mean of its divisors is an integer number (590275).

2^1180549 is an apocalyptic number.

It is an amenable number.

1180549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1180549 is an equidigital number, since it uses as much as digits as its factorization.

1180549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 1180549 is about 1086.5307174673. The cubic root of 1180549 is about 105.6885661282.

The spelling of 1180549 in words is "one million, one hundred eighty thousand, five hundred forty-nine".