2186635164 has 48 divisors (see below), whose sum is σ = 5833486848. Its totient is φ = 624489408.

The previous prime is 2186635141. The next prime is 2186635169. The reversal of 2186635164 is 4615366812.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186635169) 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, 287134 + ... + 294650.

It is an arithmetic number, because the mean of its divisors is an integer number (121530976).

Almost surely, 2^2186635164 is an apocalyptic number.

It is an amenable number.

2186635164 is an abundant number, since it is smaller than the sum of its proper divisors (3646851684).

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

2186635164 is a wasteful number, since it uses less digits than its factorization.

2186635164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10994 (or 10992 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 2186635164 is about 46761.4709349481. The cubic root of 2186635164 is about 1297.9524303101.

The spelling of 2186635164 in words is "two billion, one hundred eighty-six million, six hundred thirty-five thousand, one hundred sixty-four".