2186706870 has 24 divisors (see below), whose sum is σ = 5685438096. Its totient is φ = 583121808.

The previous prime is 2186706869. The next prime is 2186706881. The reversal of 2186706870 is 786076812.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12148282 + ... + 12148461.

It is an arithmetic number, because the mean of its divisors is an integer number (236893254).

Almost surely, 2^2186706870 is an apocalyptic number.

2186706870 is an abundant number, since it is smaller than the sum of its proper divisors (3498731226).

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

2186706870 is a wasteful number, since it uses less digits than its factorization.

2186706870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24296756 (or 24296753 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 2186706870 is about 46762.2376496249. The cubic root of 2186706870 is about 1297.9666180083.

The spelling of 2186706870 in words is "two billion, one hundred eighty-six million, seven hundred six thousand, eight hundred seventy".