1089713664 has 120 divisors (see below), whose sum is σ = 3387095712. Its totient is φ = 335278080.

The previous prime is 1089713663. The next prime is 1089713671. The reversal of 1089713664 is 4663179801.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089713663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50809 + ... + 68999.

Almost surely, 2^1089713664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089713664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693547856).

1089713664 is an abundant number, since it is smaller than the sum of its proper divisors (2297382048).

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

1089713664 is a wasteful number, since it uses less digits than its factorization.

1089713664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18228 (or 18209 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1089713664 is about 33010.8113199297. The cubic root of 1089713664 is about 1029.0523423071.

The spelling of 1089713664 in words is "one billion, eighty-nine million, seven hundred thirteen thousand, six hundred sixty-four".