1181804 has 12 divisors (see below), whose sum is σ = 2227344. Its totient is φ = 545424.

The previous prime is 1181777. The next prime is 1181839. The reversal of 1181804 is 4081811.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1181804.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 11312 + ... + 11415.

It is an arithmetic number, because the mean of its divisors is an integer number (185612).

2^1181804 is an apocalyptic number.

It is an amenable number.

1181804 is a deficient number, since it is larger than the sum of its proper divisors (1045540).

1181804 is a wasteful number, since it uses less digits than its factorization.

1181804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22744 (or 22742 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 1181804 is about 1087.1080903020. The cubic root of 1181804 is about 105.7260041272.

The spelling of 1181804 in words is "one million, one hundred eighty-one thousand, eight hundred four".