1180985 has 8 divisors (see below), whose sum is σ = 1526280. Its totient is φ = 872064.

The previous prime is 1180979. The next prime is 1180987. The reversal of 1180985 is 5890811.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5929 + 1175056 = 77^2 + 1084^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1180985 - 2¹⁰ = 1179961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1180987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9020 + ... + 9149.

It is an arithmetic number, because the mean of its divisors is an integer number (190785).

2^1180985 is an apocalyptic number.

It is an amenable number.

1180985 is a deficient number, since it is larger than the sum of its proper divisors (345295).

1180985 is a wasteful number, since it uses less digits than its factorization.

1180985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18187.

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 1180985 is about 1086.7313375439. The cubic root of 1180985 is about 105.7015754833.

The spelling of 1180985 in words is "one million, one hundred eighty thousand, nine hundred eighty-five".