1089765504 has 96 divisors (see below), whose sum is σ = 3142421100. Its totient is φ = 362502144.

The previous prime is 1089765503. The next prime is 1089765511. The reversal of 1089765504 is 4055679801.

1089765504 is a `hidden beast` number, since 1 + 0 + 8 + 97 + 6 + 550 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 742017600 + 347747904 = 27240^2 + 18648^2 .

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 1089765504.

It is not an unprimeable number, because it can be changed into a prime (1089765503) 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, 982102 + ... + 983210.

Almost surely, 2^1089765504 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 1089765504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571210550).

1089765504 is an abundant number, since it is smaller than the sum of its proper divisors (2052655596).

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

1089765504 is a wasteful number, since it uses less digits than its factorization.

1089765504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1967 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 1089765504 is about 33011.5965078940. The cubic root of 1089765504 is about 1029.0686601189.

The spelling of 1089765504 in words is "one billion, eighty-nine million, seven hundred sixty-five thousand, five hundred four".