1089781834 has 8 divisors (see below), whose sum is σ = 1643143140. Its totient is φ = 542067456.

The previous prime is 1089781717. The next prime is 1089781871. The reversal of 1089781834 is 4381879801.

It can be written as a sum of positive squares in 2 ways, for example, as 1048140625 + 41641209 = 32375^2 + 6453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1411249 + ... + 1412020.

Almost surely, 2^1089781834 is an apocalyptic number.

1089781834 is a deficient number, since it is larger than the sum of its proper divisors (553361306).

1089781834 is a wasteful number, since it uses less digits than its factorization.

1089781834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823464.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 1089781834 is about 33011.8438442932. The cubic root of 1089781834 is about 1029.0738002484.

The spelling of 1089781834 in words is "one billion, eighty-nine million, seven hundred eighty-one thousand, eight hundred thirty-four".