1091356 has 12 divisors (see below), whose sum is σ = 2182768. Its totient is φ = 467712.

The previous prime is 1091339. The next prime is 1091359. The reversal of 1091356 is 6531901.

1091356 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1091356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091359) 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, 19461 + ... + 19516.

2^1091356 is an apocalyptic number.

It is an amenable number.

1091356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1091356 is a wasteful number, since it uses less digits than its factorization.

1091356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38988 (or 38986 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1091356 is about 1044.6798552667. The cubic root of 1091356 is about 102.9569053389.

The spelling of 1091356 in words is "one million, ninety-one thousand, three hundred fifty-six".