1140810805 has 4 divisors (see below), whose sum is σ = 1368972972. Its totient is φ = 912648640.

The previous prime is 1140810767. The next prime is 1140810817. The reversal of 1140810805 is 5080180411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5080180411 = 409 ⋅12420979.

It can be written as a sum of positive squares in 2 ways, for example, as 307160676 + 833650129 = 17526^2 + 28873^2 .

It is not a de Polignac number, because 1140810805 - 2²³ = 1132422197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114081076 + ... + 114081085.

It is an arithmetic number, because the mean of its divisors is an integer number (342243243).

Almost surely, 2^1140810805 is an apocalyptic number.

It is an amenable number.

1140810805 is a deficient number, since it is larger than the sum of its proper divisors (228162167).

1140810805 is an equidigital number, since it uses as much as digits as its factorization.

1140810805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228162166.

The product of its (nonzero) digits is 1280, while the sum is 28.

The square root of 1140810805 is about 33775.8908838834. The cubic root of 1140810805 is about 1044.8915296858.

The spelling of 1140810805 in words is "one billion, one hundred forty million, eight hundred ten thousand, eight hundred five".