1205116807 has 2 divisors, whose sum is σ = 1205116808. Its totient is φ = 1205116806.

The previous prime is 1205116741. The next prime is 1205116823. The reversal of 1205116807 is 7086115021.

It is a strong prime.

It is an emirp because it is prime and its reverse (7086115021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1205116807 - 2¹¹ = 1205114759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205116207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602558403 + 602558404.

It is an arithmetic number, because the mean of its divisors is an integer number (602558404).

Almost surely, 2^1205116807 is an apocalyptic number.

1205116807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205116807 is an equidigital number, since it uses as much as digits as its factorization.

1205116807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 1205116807 is about 34714.7923369851. The cubic root of 1205116807 is about 1064.1668215899.

The spelling of 1205116807 in words is "one billion, two hundred five million, one hundred sixteen thousand, eight hundred seven".