1206311166 has 48 divisors (see below), whose sum is σ = 2640038544. Its totient is φ = 398068992.

The previous prime is 1206311149. The next prime is 1206311191. The reversal of 1206311166 is 6611136021.

1206311166 is a `hidden beast` number, since 1 + 20 + 631 + 1 + 1 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 929430 + ... + 930726.

It is an arithmetic number, because the mean of its divisors is an integer number (55000803).

Almost surely, 2^1206311166 is an apocalyptic number.

1206311166 is an abundant number, since it is smaller than the sum of its proper divisors (1433727378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1206311166 is a wasteful number, since it uses less digits than its factorization.

1206311166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1782 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1206311166 is about 34731.9905274662. The cubic root of 1206311166 is about 1064.5182612624.

Adding to 1206311166 its reverse (6611136021), we get a palindrome (7817447187).

The spelling of 1206311166 in words is "one billion, two hundred six million, three hundred eleven thousand, one hundred sixty-six".