1089580864 has 42 divisors (see below), whose sum is σ = 2296841990. Its totient is φ = 512735232.

The previous prime is 1089580853. The next prime is 1089580873. The reversal of 1089580864 is 4680859801.

It can be written as a sum of positive squares in 3 ways, for example, as 116640000 + 972940864 = 10800^2 + 31192^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10959 + ... + 47950.

Almost surely, 2^1089580864 is an apocalyptic number.

It is an amenable number.

1089580864 is an abundant number, since it is smaller than the sum of its proper divisors (1207261126).

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

1089580864 is an equidigital number, since it uses as much as digits as its factorization.

1089580864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58955 (or 58928 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 49.

The square root of 1089580864 is about 33008.7997964179. The cubic root of 1089580864 is about 1029.0105381441.

The spelling of 1089580864 in words is "one billion, eighty-nine million, five hundred eighty thousand, eight hundred sixty-four".