1089001632 has 96 divisors (see below), whose sum is σ = 2903040000. Its totient is φ = 357412608.

The previous prime is 1089001579. The next prime is 1089001633. The reversal of 1089001632 is 2361009801.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1089001632.

It is not an unprimeable number, because it can be changed into a prime (1089001633) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2182119 + ... + 2182617.

It is an arithmetic number, because the mean of its divisors is an integer number (30240000).

Almost surely, 2^1089001632 is an apocalyptic number.

1089001632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089001632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1451520000).

1089001632 is an abundant number, since it is smaller than the sum of its proper divisors (1814038368).

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

1089001632 is a wasteful number, since it uses less digits than its factorization.

1089001632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 1089001632 is about 33000.0247272635. The cubic root of 1089001632 is about 1028.8281617514.

The spelling of 1089001632 in words is "one billion, eighty-nine million, one thousand, six hundred thirty-two".