1205116867 has 4 divisors (see below), whose sum is σ = 1222090416. Its totient is φ = 1188143320.

The previous prime is 1205116849. The next prime is 1205116903. The reversal of 1205116867 is 7686115021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1205116867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1205116807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8486668 + ... + 8486809.

It is an arithmetic number, because the mean of its divisors is an integer number (305522604).

Almost surely, 2^1205116867 is an apocalyptic number.

1205116867 is a deficient number, since it is larger than the sum of its proper divisors (16973549).

1205116867 is an equidigital number, since it uses as much as digits as its factorization.

1205116867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16973548.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1205116867 is about 34714.7932011700. The cubic root of 1205116867 is about 1064.1668392507.

The spelling of 1205116867 in words is "one billion, two hundred five million, one hundred sixteen thousand, eight hundred sixty-seven".