3666870186 has 32 divisors (see below), whose sum is σ = 8518823808. Its totient is φ = 1030501440.

The previous prime is 3666870169. The next prime is 3666870187. The reversal of 3666870186 is 6810786663.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3666870187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713065 + ... + 718188.

It is an arithmetic number, because the mean of its divisors is an integer number (266213244).

Almost surely, 2^3666870186 is an apocalyptic number.

3666870186 is an abundant number, since it is smaller than the sum of its proper divisors (4851953622).

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

3666870186 is a wasteful number, since it uses less digits than its factorization.

3666870186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431326.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The square root of 3666870186 is about 60554.6875642175. The cubic root of 3666870186 is about 1542.0501993108.

The spelling of 3666870186 in words is "three billion, six hundred sixty-six million, eight hundred seventy thousand, one hundred eighty-six".