1085718773 has 2 divisors, whose sum is σ = 1085718774. Its totient is φ = 1085718772.

The previous prime is 1085718757. The next prime is 1085718793. The reversal of 1085718773 is 3778175801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 969575044 + 116143729 = 31138^2 + 10777^2 .

It is an emirp because it is prime and its reverse (3778175801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1085718773 - 2⁴ = 1085718757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085718793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542859386 + 542859387.

It is an arithmetic number, because the mean of its divisors is an integer number (542859387).

Almost surely, 2^1085718773 is an apocalyptic number.

It is an amenable number.

1085718773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085718773 is an equidigital number, since it uses as much as digits as its factorization.

1085718773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329280, while the sum is 47.

The square root of 1085718773 is about 32950.2469338243. The cubic root of 1085718773 is about 1027.7933003167.

The spelling of 1085718773 in words is "one billion, eighty-five million, seven hundred eighteen thousand, seven hundred seventy-three".