1182985 has 8 divisors (see below), whose sum is σ = 1427976. Its totient is φ = 940800.

The previous prime is 1182967. The next prime is 1182989. The reversal of 1182985 is 5892811.

It can be written as a sum of positive squares in 4 ways, for example, as 84681 + 1098304 = 291^2 + 1048^2 .

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

It is not a de Polignac number, because 1182985 - 2⁵ = 1182953 is a prime.

It is a Duffinian number.

1182985 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1182985.

It is not an unprimeable number, because it can be changed into a prime (1182989) 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 in 7 ways as a sum of consecutive naturals, for example, 385 + ... + 1585.

It is an arithmetic number, because the mean of its divisors is an integer number (178497).

2^1182985 is an apocalyptic number.

It is an amenable number.

1182985 is a deficient number, since it is larger than the sum of its proper divisors (244991).

1182985 is a wasteful number, since it uses less digits than its factorization.

1182985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its digits is 5760, while the sum is 34.

The square root of 1182985 is about 1087.6511389228. The cubic root of 1182985 is about 105.7612104281.

Subtracting from 1182985 its product of digits (5760), we obtain a square (1177225 = 1085²).

The spelling of 1182985 in words is "one million, one hundred eighty-two thousand, nine hundred eighty-five".