1666870182 has 24 divisors (see below), whose sum is σ = 3645309096. Its totient is φ = 550430016.

The previous prime is 1666870109. The next prime is 1666870187. The reversal of 1666870182 is 2810786661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666870187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430803 + ... + 434654.

It is an arithmetic number, because the mean of its divisors is an integer number (151887879).

Almost surely, 2^1666870182 is an apocalyptic number.

1666870182 is an abundant number, since it is smaller than the sum of its proper divisors (1978438914).

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

1666870182 is a wasteful number, since it uses less digits than its factorization.

1666870182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865572 (or 865569 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1666870182 is about 40827.3215139078. The cubic root of 1666870182 is about 1185.6793583543.

The spelling of 1666870182 in words is "one billion, six hundred sixty-six million, eight hundred seventy thousand, one hundred eighty-two".