1131786 has 16 divisors (see below), whose sum is σ = 2515200. Its totient is φ = 377244.

The previous prime is 1131769. The next prime is 1131787. The reversal of 1131786 is 6871311.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1131787) 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, 10426 + ... + 10533.

It is an arithmetic number, because the mean of its divisors is an integer number (157200).

2^1131786 is an apocalyptic number.

1131786 is an abundant number, since it is smaller than the sum of its proper divisors (1383414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131786 is a wasteful number, since it uses less digits than its factorization.

1131786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20970 (or 20964 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 1131786 is about 1063.8543133343. The cubic root of 1131786 is about 104.2128898502.

The spelling of 1131786 in words is "one million, one hundred thirty-one thousand, seven hundred eighty-six".