1081543760 has 80 divisors (see below), whose sum is σ = 2763519552. Its totient is φ = 390374400.

The previous prime is 1081543751. The next prime is 1081543817. The reversal of 1081543760 is 673451801.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1081543760.

It is a congruent 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, 116075 + ... + 125045.

Almost surely, 2^1081543760 is an apocalyptic number.

1081543760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081543760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381759776).

1081543760 is an abundant number, since it is smaller than the sum of its proper divisors (1681975792).

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

1081543760 is a wasteful number, since it uses less digits than its factorization.

1081543760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9132 (or 9126 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1081543760 is about 32886.8326234072. The cubic root of 1081543760 is about 1026.4741857256.

The spelling of 1081543760 in words is "one billion, eighty-one million, five hundred forty-three thousand, seven hundred sixty".