1091016 has 32 divisors (see below), whose sum is σ = 3031200. Its totient is φ = 363600.

The previous prime is 1091003. The next prime is 1091017. The reversal of 1091016 is 6101901.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1091016.

It is not an unprimeable number, because it can be changed into a prime (1091017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310 + ... + 2741.

It is an arithmetic number, because the mean of its divisors is an integer number (94725).

2^1091016 is an apocalyptic number.

It is an amenable number.

1091016 is an abundant number, since it is smaller than the sum of its proper divisors (1940184).

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

1091016 is a wasteful number, since it uses less digits than its factorization.

1091016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5066 (or 5056 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 1091016 is about 1044.5171133112. The cubic root of 1091016 is about 102.9462125299.

Adding to 1091016 its reverse (6101901), we get a palindrome (7192917).

The spelling of 1091016 in words is "one million, ninety-one thousand, sixteen".