1131866 has 8 divisors (see below), whose sum is σ = 1707264. Its totient is φ = 562780.

The previous prime is 1131863. The next prime is 1131869. The reversal of 1131866 is 6681311.

It is an interprime number because it is at equal distance from previous prime (1131863) and next prime (1131869).

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

It is a super-2 number, since 2×1131866² = 2562241283912, which contains 22 as substring.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1131863) 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, 1100 + ... + 1863.

It is an arithmetic number, because the mean of its divisors is an integer number (213408).

2^1131866 is an apocalyptic number.

1131866 is a deficient number, since it is larger than the sum of its proper divisors (575398).

1131866 is a wasteful number, since it uses less digits than its factorization.

1131866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156.

The product of its digits is 864, while the sum is 26.

The square root of 1131866 is about 1063.8919118031. The cubic root of 1131866 is about 104.2153452127.

The spelling of 1131866 in words is "one million, one hundred thirty-one thousand, eight hundred sixty-six".