1081705773 has 4 divisors (see below), whose sum is σ = 1442274368. Its totient is φ = 721137180.

The previous prime is 1081705769. The next prime is 1081705787. The reversal of 1081705773 is 3775071801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1081705773 - 2² = 1081705769 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081705763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180284293 + ... + 180284298.

It is an arithmetic number, because the mean of its divisors is an integer number (360568592).

Almost surely, 2^1081705773 is an apocalyptic number.

It is an amenable number.

1081705773 is a deficient number, since it is larger than the sum of its proper divisors (360568595).

1081705773 is an equidigital number, since it uses as much as digits as its factorization.

1081705773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360568594.

The product of its (nonzero) digits is 41160, while the sum is 39.

The square root of 1081705773 is about 32889.2957206444. The cubic root of 1081705773 is about 1026.5254377307.

The spelling of 1081705773 in words is "one billion, eighty-one million, seven hundred five thousand, seven hundred seventy-three".