1091383 has 8 divisors (see below), whose sum is σ = 1183248. Its totient is φ = 1002624.

The previous prime is 1091381. The next prime is 1091393. The reversal of 1091383 is 3831901.

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

It is a cyclic number.

It is not a de Polignac number, because 1091383 - 2¹ = 1091381 is a prime.

It is a super-2 number, since 2×1091383² = 2382233705378, which contains 22 as substring.

It is a Duffinian number.

1091383 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16 + ... + 1477.

It is an arithmetic number, because the mean of its divisors is an integer number (147906).

2^1091383 is an apocalyptic number.

1091383 is a deficient number, since it is larger than the sum of its proper divisors (91865).

1091383 is a wasteful number, since it uses less digits than its factorization.

1091383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1091383 is about 1044.6927778060. The cubic root of 1091383 is about 102.9577543785.

The spelling of 1091383 in words is "one million, ninety-one thousand, three hundred eighty-three".