1089573564 has 24 divisors (see below), whose sum is σ = 2580285568. Its totient is φ = 357770160.

The previous prime is 1089573547. The next prime is 1089573593. The reversal of 1089573564 is 4653759801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676792 + ... + 678399.

Almost surely, 2^1089573564 is an apocalyptic number.

It is an amenable number.

1089573564 is an abundant number, since it is smaller than the sum of its proper divisors (1490712004).

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

1089573564 is a wasteful number, since it uses less digits than its factorization.

1089573564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355265 (or 1355263 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 1089573564 is about 33008.6892196585. The cubic root of 1089573564 is about 1029.0082400758.

The spelling of 1089573564 in words is "one billion, eighty-nine million, five hundred seventy-three thousand, five hundred sixty-four".