1081705673 has 8 divisors (see below), whose sum is σ = 1102844808. Its totient is φ = 1060593664.

The previous prime is 1081705627. The next prime is 1081705679. The reversal of 1081705673 is 3765071801.

It can be written as a sum of positive squares in 4 ways, for example, as 326994889 + 754710784 = 18083^2 + 27472^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1081705673 - 2¹⁶ = 1081640137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081705679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85961 + ... + 97737.

It is an arithmetic number, because the mean of its divisors is an integer number (137855601).

Almost surely, 2^1081705673 is an apocalyptic number.

It is an amenable number.

1081705673 is a deficient number, since it is larger than the sum of its proper divisors (21139135).

1081705673 is a wasteful number, since it uses less digits than its factorization.

1081705673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13563.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 1081705673 is about 32889.2942003929. The cubic root of 1081705673 is about 1026.5254060978.

The spelling of 1081705673 in words is "one billion, eighty-one million, seven hundred five thousand, six hundred seventy-three".