1080891960 has 128 divisors (see below), whose sum is σ = 3465633600. Its totient is φ = 268738560.

The previous prime is 1080891953. The next prime is 1080891961. The reversal of 1080891960 is 691980801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080891961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219930 + ... + 224790.

Almost surely, 2^1080891960 is an apocalyptic number.

1080891960 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 1080891960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1732816800).

1080891960 is an abundant number, since it is smaller than the sum of its proper divisors (2384741640).

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

1080891960 is a wasteful number, since it uses less digits than its factorization.

1080891960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5001 (or 4997 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 1080891960 is about 32876.9213887189. The cubic root of 1080891960 is about 1026.2679403112.

The spelling of 1080891960 in words is "one billion, eighty million, eight hundred ninety-one thousand, nine hundred sixty".