1206140166 has 128 divisors (see below), whose sum is σ = 3374161920. Its totient is φ = 310240800.

The previous prime is 1206140149. The next prime is 1206140167. The reversal of 1206140166 is 6610416021.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206140167) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 443551 + ... + 446261.

It is an arithmetic number, because the mean of its divisors is an integer number (26360640).

Almost surely, 2^1206140166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1206140166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1687080960).

1206140166 is an abundant number, since it is smaller than the sum of its proper divisors (2168021754).

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

1206140166 is a wasteful number, since it uses less digits than its factorization.

1206140166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847 (or 2841 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1206140166 is about 34729.5287327657. The cubic root of 1206140166 is about 1064.4679588115.

Adding to 1206140166 its reverse (6610416021), we get a palindrome (7816556187).

The spelling of 1206140166 in words is "one billion, two hundred six million, one hundred forty thousand, one hundred sixty-six".