1089564634 has 8 divisors (see below), whose sum is σ = 1634820660. Its totient is φ = 544624416.

The previous prime is 1089564599. The next prime is 1089564677. The reversal of 1089564634 is 4364659801.

It can be written as a sum of positive squares in 2 ways, for example, as 936176409 + 153388225 = 30597^2 + 12385^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70129 + ... + 84244.

Almost surely, 2^1089564634 is an apocalyptic number.

1089564634 is a deficient number, since it is larger than the sum of its proper divisors (545256026).

1089564634 is a wasteful number, since it uses less digits than its factorization.

1089564634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157904.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 1089564634 is about 33008.5539519683. The cubic root of 1089564634 is about 1029.0054288633.

The spelling of 1089564634 in words is "one billion, eighty-nine million, five hundred sixty-four thousand, six hundred thirty-four".