1091345 has 8 divisors (see below), whose sum is σ = 1318464. Its totient is φ = 867184.

The previous prime is 1091339. The next prime is 1091359. The reversal of 1091345 is 5431901.

It is a happy number.

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 1091345 - 2⁴ = 1091329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1091345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (164808).

2^1091345 is an apocalyptic number.

It is an amenable number.

1091345 is a deficient number, since it is larger than the sum of its proper divisors (227119).

1091345 is a wasteful number, since it uses less digits than its factorization.

1091345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1091345 is about 1044.6745904826. The cubic root of 1091345 is about 102.9565594298.

The spelling of 1091345 in words is "one million, ninety-one thousand, three hundred forty-five".