1091911132 has 24 divisors (see below), whose sum is σ = 2128795200. Its totient is φ = 486580416.

The previous prime is 1091911129. The next prime is 1091911147. The reversal of 1091911132 is 2311191901.

It is a self number, because there is not a number n which added to its sum of digits gives 1091911132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360532 + ... + 363547.

It is an arithmetic number, because the mean of its divisors is an integer number (88699800).

Almost surely, 2^1091911132 is an apocalyptic number.

It is an amenable number.

1091911132 is a deficient number, since it is larger than the sum of its proper divisors (1036884068).

1091911132 is a wasteful number, since it uses less digits than its factorization.

1091911132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724125 (or 724123 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 28.

The square root of 1091911132 is about 33044.0786223493. The cubic root of 1091911132 is about 1029.7435915619.

The spelling of 1091911132 in words is "one billion, ninety-one million, nine hundred eleven thousand, one hundred thirty-two".