1091765060 has 12 divisors (see below), whose sum is σ = 2292706668. Its totient is φ = 436706016.

The previous prime is 1091765053. The next prime is 1091765063. The reversal of 1091765060 is 605671901.

It can be written as a sum of positive squares in 2 ways, for example, as 467164996 + 624600064 = 21614^2 + 24992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1091765060.

It is not an unprimeable number, because it can be changed into a prime (1091765063) 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, 27294107 + ... + 27294146.

It is an arithmetic number, because the mean of its divisors is an integer number (191058889).

Almost surely, 2^1091765060 is an apocalyptic number.

1091765060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1091765060 is an abundant number, since it is smaller than the sum of its proper divisors (1200941608).

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

1091765060 is a wasteful number, since it uses less digits than its factorization.

1091765060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54588262 (or 54588260 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 1091765060 is about 33041.8682885820. The cubic root of 1091765060 is about 1029.6976710318.

The spelling of 1091765060 in words is "one billion, ninety-one million, seven hundred sixty-five thousand, sixty".