1091338 has 8 divisors (see below), whose sum is σ = 1677060. Its totient is φ = 532320.

The previous prime is 1091329. The next prime is 1091339. The reversal of 1091338 is 8331901.

It can be written as a sum of positive squares in 2 ways, for example, as 710649 + 380689 = 843^2 + 617^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1091339) 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, 6573 + ... + 6736.

2^1091338 is an apocalyptic number.

1091338 is a deficient number, since it is larger than the sum of its proper divisors (585722).

1091338 is a wasteful number, since it uses less digits than its factorization.

1091338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13352.

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

The square root of 1091338 is about 1044.6712401517. The cubic root of 1091338 is about 102.9563393047.

The spelling of 1091338 in words is "one million, ninety-one thousand, three hundred thirty-eight".