1081563392 has 144 divisors (see below), whose sum is σ = 2814440832. Its totient is φ = 402554880.

The previous prime is 1081563337. The next prime is 1081563403. The reversal of 1081563392 is 2933651801.

It is a happy number.

It is an unprimeable number.

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, 394667 + ... + 397397.

It is an arithmetic number, because the mean of its divisors is an integer number (19544728).

Almost surely, 2^1081563392 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 1081563392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407220416).

1081563392 is an abundant number, since it is smaller than the sum of its proper divisors (1732877440).

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

1081563392 is a wasteful number, since it uses less digits than its factorization.

1081563392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1081563392 is about 32887.1311001735. The cubic root of 1081563392 is about 1026.4803964835.

The spelling of 1081563392 in words is "one billion, eighty-one million, five hundred sixty-three thousand, three hundred ninety-two".