1091052732 has 192 divisors, whose sum is σ = 3457843200. Its totient is φ = 259096320.

The previous prime is 1091052731. The next prime is 1091052733. The reversal of 1091052732 is 2372501901.

It is an interprime number because it is at equal distance from previous prime (1091052731) and next prime (1091052733).

It is a super-3 number, since 3×1091052732³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1091052732.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091052731) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 508053 + ... + 510195.

It is an arithmetic number, because the mean of its divisors is an integer number (18009600).

Almost surely, 2^1091052732 is an apocalyptic number.

1091052732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1091052732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728921600).

1091052732 is an abundant number, since it is smaller than the sum of its proper divisors (2366790468).

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

1091052732 is a wasteful number, since it uses less digits than its factorization.

1091052732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2216 (or 2214 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 1091052732 is about 33031.0873572155. The cubic root of 1091052732 is about 1029.4736783772.

The spelling of 1091052732 in words is "one billion, ninety-one million, fifty-two thousand, seven hundred thirty-two".