1080785780 has 24 divisors (see below), whose sum is σ = 2270299752. Its totient is φ = 432190592.

The previous prime is 1080785687. The next prime is 1080785809. The reversal of 1080785780 is 875870801.

It can be written as a sum of positive squares in 4 ways, for example, as 609201124 + 471584656 = 24682^2 + 21716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101594 + ... + 111726.

It is an arithmetic number, because the mean of its divisors is an integer number (94595823).

Almost surely, 2^1080785780 is an apocalyptic number.

1080785780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1080785780 is an abundant number, since it is smaller than the sum of its proper divisors (1189513972).

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

1080785780 is a wasteful number, since it uses less digits than its factorization.

1080785780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15475 (or 15473 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 44.

The square root of 1080785780 is about 32875.3065384948. The cubic root of 1080785780 is about 1026.2343345170.

The spelling of 1080785780 in words is "one billion, eighty million, seven hundred eighty-five thousand, seven hundred eighty".