1091330 has 8 divisors (see below), whose sum is σ = 1964412. Its totient is φ = 436528.

The previous prime is 1091329. The next prime is 1091339. The reversal of 1091330 is 331901.

It can be written as a sum of positive squares in 2 ways, for example, as 1087849 + 3481 = 1043^2 + 59^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1091299 and 1091308.

It is not an unprimeable number, because it can be changed into a prime (1091339) 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 3 ways as a sum of consecutive naturals, for example, 54557 + ... + 54576.

2^1091330 is an apocalyptic number.

1091330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1091330 is a deficient number, since it is larger than the sum of its proper divisors (873082).

1091330 is a wasteful number, since it uses less digits than its factorization.

1091330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109140.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1091330 is about 1044.6674111888. The cubic root of 1091330 is about 102.9560877319.

The spelling of 1091330 in words is "one million, ninety-one thousand, three hundred thirty".