1081860705 has 40 divisors (see below), whose sum is σ = 2053427112. Its totient is φ = 543048192.

The previous prime is 1081860677. The next prime is 1081860709. The reversal of 1081860705 is 5070681801.

It can be written as a sum of positive squares in 4 ways, for example, as 50680161 + 1031180544 = 7119^2 + 32112^2 .

It is not a de Polignac number, because 1081860705 - 2⁸ = 1081860449 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081860705.

It is not an unprimeable number, because it can be changed into a prime (1081860709) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 71682 + ... + 85451.

Almost surely, 2^1081860705 is an apocalyptic number.

1081860705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1081860705 is a deficient number, since it is larger than the sum of its proper divisors (971566407).

1081860705 is a wasteful number, since it uses less digits than its factorization.

1081860705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157167 (or 157158 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 1081860705 is about 32891.6509923111. The cubic root of 1081860705 is about 1026.5744449101.

The spelling of 1081860705 in words is "one billion, eighty-one million, eight hundred sixty thousand, seven hundred five".