2186650172 has 12 divisors (see below), whose sum is σ = 4373300400. Its totient is φ = 937135776.

The previous prime is 2186650133. The next prime is 2186650183. The reversal of 2186650172 is 2710566812.

2186650172 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39047297 + ... + 39047352.

It is an arithmetic number, because the mean of its divisors is an integer number (364441700).

Almost surely, 2^2186650172 is an apocalyptic number.

It is an amenable number.

2186650172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2186650172 is a wasteful number, since it uses less digits than its factorization.

2186650172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78094660 (or 78094658 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2186650172 is about 46761.6314086667. The cubic root of 2186650172 is about 1297.9553998080.

The spelling of 2186650172 in words is "two billion, one hundred eighty-six million, six hundred fifty thousand, one hundred seventy-two".