1091122984 has 24 divisors (see below), whose sum is σ = 2379873690. Its totient is φ = 467623968.

The previous prime is 1091122927. The next prime is 1091122987. The reversal of 1091122984 is 4892211901.

It can be written as a sum of positive squares in only one way, i.e., 603684900 + 487438084 = 24570^2 + 22078^2 .

It is not an unprimeable number, because it can be changed into a prime (1091122987) 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 5 ways as a sum of consecutive naturals, for example, 1391347 + ... + 1392130.

Almost surely, 2^1091122984 is an apocalyptic number.

1091122984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1091122984 is an abundant number, since it is smaller than the sum of its proper divisors (1288750706).

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

1091122984 is a wasteful number, since it uses less digits than its factorization.

1091122984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783497 (or 2783486 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1091122984 is about 33032.1507625525. The cubic root of 1091122984 is about 1029.4957735612.

The spelling of 1091122984 in words is "one billion, ninety-one million, one hundred twenty-two thousand, nine hundred eighty-four".