1089860544 has 42 divisors (see below), whose sum is σ = 3123890120. Its totient is φ = 363286656.

The previous prime is 1089860509. The next prime is 1089860561. The reversal of 1089860544 is 4450689801.

1089860544 is a `hidden beast` number, since 10 + 8 + 98 + 6 + 0 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1089860544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 945484 + ... + 946635.

Almost surely, 2^1089860544 is an apocalyptic number.

It is an amenable number.

1089860544 is an abundant number, since it is smaller than the sum of its proper divisors (2034029576).

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

1089860544 is a wasteful number, since it uses less digits than its factorization.

1089860544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892137 (or 1892124 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1089860544 is about 33013.0359706586. The cubic root of 1089860544 is about 1029.0985747633.

The spelling of 1089860544 in words is "one billion, eighty-nine million, eight hundred sixty thousand, five hundred forty-four".