1091484991 has 2 divisors, whose sum is σ = 1091484992. Its totient is φ = 1091484990.

The previous prime is 1091484959. The next prime is 1091485013. The reversal of 1091484991 is 1994841901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1091484991 - 2⁵ = 1091484959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091484091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545742495 + 545742496.

It is an arithmetic number, because the mean of its divisors is an integer number (545742496).

Almost surely, 2^1091484991 is an apocalyptic number.

1091484991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091484991 is an equidigital number, since it uses as much as digits as its factorization.

1091484991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 1091484991 is about 33037.6299240729. The cubic root of 1091484991 is about 1029.6096145226.

The spelling of 1091484991 in words is "one billion, ninety-one million, four hundred eighty-four thousand, nine hundred ninety-one".