1091589416 has 16 divisors (see below), whose sum is σ = 2066996340. Its totient is φ = 540390400.

The previous prime is 1091589353. The next prime is 1091589439. The reversal of 1091589416 is 6149851901.

It can be written as a sum of positive squares in 2 ways, for example, as 762312100 + 329277316 = 27610^2 + 18146^2 .

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, 674681 + ... + 676296.

Almost surely, 2^1091589416 is an apocalyptic number.

It is an amenable number.

1091589416 is a deficient number, since it is larger than the sum of its proper divisors (975406924).

1091589416 is a wasteful number, since it uses less digits than its factorization.

1091589416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351084 (or 1351080 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 1091589416 is about 33039.2102811190. The cubic root of 1091589416 is about 1029.6424485533.

The spelling of 1091589416 in words is "one billion, ninety-one million, five hundred eighty-nine thousand, four hundred sixteen".