2185166136 has 32 divisors (see below), whose sum is σ = 5750438400. Its totient is φ = 690052320.

The previous prime is 2185166119. The next prime is 2185166141. The reversal of 2185166136 is 6316615812.

It is a junction number, because it is equal to n+sod(n) for n = 2185166094 and 2185166103.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2395560 + ... + 2396471.

It is an arithmetic number, because the mean of its divisors is an integer number (179701200).

Almost surely, 2^2185166136 is an apocalyptic number.

It is an amenable number.

2185166136 is an abundant number, since it is smaller than the sum of its proper divisors (3565272264).

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

2185166136 is a wasteful number, since it uses less digits than its factorization.

2185166136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4792059 (or 4792055 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 2185166136 is about 46745.7606206167. The cubic root of 2185166136 is about 1297.6617011802.

The spelling of 2185166136 in words is "two billion, one hundred eighty-five million, one hundred sixty-six thousand, one hundred thirty-six".