1080661000 has 32 divisors (see below), whose sum is σ = 2528749080. Its totient is φ = 432264000.

The previous prime is 1080660953. The next prime is 1080661019. The reversal of 1080661000 is 1660801.

It can be written as a sum of positive squares in 4 ways, for example, as 153214884 + 927446116 = 12378^2 + 30454^2 .

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, 539331 + ... + 541330.

Almost surely, 2^1080661000 is an apocalyptic number.

1080661000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1080661000 is an abundant number, since it is smaller than the sum of its proper divisors (1448088080).

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

1080661000 is a wasteful number, since it uses less digits than its factorization.

1080661000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080682 (or 1080668 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1080661000 is about 32873.4087067344. The cubic root of 1080661000 is about 1026.1948390403.

The spelling of 1080661000 in words is "one billion, eighty million, six hundred sixty-one thousand".