1131986 has 12 divisors (see below), whose sum is σ = 1761162. Its totient is φ = 545664.

The previous prime is 1131973. The next prime is 1131997. The reversal of 1131986 is 6891311.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 912025 + 219961 = 955^2 + 469^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1346 + ... + 2018.

2^1131986 is an apocalyptic number.

1131986 is a deficient number, since it is larger than the sum of its proper divisors (629176).

1131986 is an equidigital number, since it uses as much as digits as its factorization.

1131986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 704 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 1131986 is about 1063.9483070150. The cubic root of 1131986 is about 104.2190280396.

The spelling of 1131986 in words is "one million, one hundred thirty-one thousand, nine hundred eighty-six".