1091130876 has 72 divisors (see below), whose sum is σ = 3038778288. Its totient is φ = 327360000.

The previous prime is 1091130871. The next prime is 1091130881. The reversal of 1091130876 is 6780311901.

It is an interprime number because it is at equal distance from previous prime (1091130871) and next prime (1091130881).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1091130876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091130871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26356 + ... + 53636.

It is an arithmetic number, because the mean of its divisors is an integer number (42205254).

Almost surely, 2^1091130876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1091130876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519389144).

1091130876 is an abundant number, since it is smaller than the sum of its proper divisors (1947647412).

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

1091130876 is a wasteful number, since it uses less digits than its factorization.

1091130876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27403 (or 27398 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1091130876 is about 33032.2702217090. The cubic root of 1091130876 is about 1029.4982556404.

The spelling of 1091130876 in words is "one billion, ninety-one million, one hundred thirty thousand, eight hundred seventy-six".