1081705500 has 72 divisors (see below), whose sum is σ = 3412434480. Its totient is φ = 288453600.

The previous prime is 1081705489. The next prime is 1081705531. The reversal of 1081705500 is 55071801.

1081705500 is a `hidden beast` number, since 10 + 81 + 70 + 5 + 500 = 666.

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 23 ways as a sum of consecutive naturals, for example, 115690 + ... + 124689.

Almost surely, 2^1081705500 is an apocalyptic number.

1081705500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1081705500 is an abundant number, since it is smaller than the sum of its proper divisors (2330728980).

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

1081705500 is a wasteful number, since it uses less digits than its factorization.

1081705500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240404 (or 240389 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

The square root of 1081705500 is about 32889.2915703577. The cubic root of 1081705500 is about 1026.5253513728.

The spelling of 1081705500 in words is "one billion, eighty-one million, seven hundred five thousand, five hundred".