1091144612 has 12 divisors (see below), whose sum is σ = 1928409756. Its totient is φ = 540170400.

The previous prime is 1091144569. The next prime is 1091144617. The reversal of 1091144612 is 2164411901.

It can be written as a sum of positive squares in 2 ways, for example, as 561500416 + 529644196 = 23696^2 + 23014^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1091144617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1350023 + ... + 1350830.

It is an arithmetic number, because the mean of its divisors is an integer number (160700813).

Almost surely, 2^1091144612 is an apocalyptic number.

It is an amenable number.

1091144612 is a deficient number, since it is larger than the sum of its proper divisors (837265144).

1091144612 is a wasteful number, since it uses less digits than its factorization.

1091144612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700958 (or 2700956 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1091144612 is about 33032.4781389468. The cubic root of 1091144612 is about 1029.5025756626.

The spelling of 1091144612 in words is "one billion, ninety-one million, one hundred forty-four thousand, six hundred twelve".