1183988 has 12 divisors (see below), whose sum is σ = 2231460. Its totient is φ = 546432.

The previous prime is 1183981. The next prime is 1183993. The reversal of 1183988 is 8893811.

It can be written as a sum of positive squares in 2 ways, for example, as 77284 + 1106704 = 278^2 + 1052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1183981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11333 + ... + 11436.

It is an arithmetic number, because the mean of its divisors is an integer number (185955).

2^1183988 is an apocalyptic number.

It is an amenable number.

1183988 is a deficient number, since it is larger than the sum of its proper divisors (1047472).

1183988 is a wasteful number, since it uses less digits than its factorization.

1183988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22786 (or 22784 counting only the distinct ones).

The product of its digits is 13824, while the sum is 38.

The square root of 1183988 is about 1088.1121265752. The cubic root of 1183988 is about 105.7910920491.

The spelling of 1183988 in words is "one million, one hundred eighty-three thousand, nine hundred eighty-eight".