1081039960 has 512 divisors, whose sum is σ = 3628800000. Its totient is φ = 284497920.

The previous prime is 1081039943. The next prime is 1081039969. The reversal of 1081039960 is 699301801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081039969) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 37277226 + ... + 37277254.

It is an arithmetic number, because the mean of its divisors is an integer number (7087500).

Almost surely, 2^1081039960 is an apocalyptic number.

1081039960 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 1081039960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400000).

1081039960 is an abundant number, since it is smaller than the sum of its proper divisors (2547760040).

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

1081039960 is a wasteful number, since it uses less digits than its factorization.

1081039960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1081039960 is about 32879.1721306970. The cubic root of 1081039960 is about 1026.3147783946.

The spelling of 1081039960 in words is "one billion, eighty-one million, thirty-nine thousand, nine hundred sixty".