1091109092 has 12 divisors (see below), whose sum is σ = 1945468476. Its totient is φ = 535260960.

The previous prime is 1091109073. The next prime is 1091109127. The reversal of 1091109092 is 2909011901.

It can be written as a sum of positive squares in 2 ways, for example, as 680479396 + 410629696 = 26086^2 + 20264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2573159 + ... + 2573582.

It is an arithmetic number, because the mean of its divisors is an integer number (162122373).

Almost surely, 2^1091109092 is an apocalyptic number.

It is an amenable number.

1091109092 is a deficient number, since it is larger than the sum of its proper divisors (854359384).

1091109092 is a wasteful number, since it uses less digits than its factorization.

1091109092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146798 (or 5146796 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 1091109092 is about 33031.9404819033. The cubic root of 1091109092 is about 1029.4914044185.

The spelling of 1091109092 in words is "one billion, ninety-one million, one hundred nine thousand, ninety-two".