2186142227 has 4 divisors (see below), whose sum is σ = 2256662976. Its totient is φ = 2115621480.

The previous prime is 2186142209. The next prime is 2186142241. The reversal of 2186142227 is 7222416812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2186142227 - 2¹⁶ = 2186076691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2186141227) by changing a digit.

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, 35260328 + ... + 35260389.

It is an arithmetic number, because the mean of its divisors is an integer number (564165744).

Almost surely, 2^2186142227 is an apocalyptic number.

2186142227 is a deficient number, since it is larger than the sum of its proper divisors (70520749).

2186142227 is an equidigital number, since it uses as much as digits as its factorization.

2186142227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70520748.

The product of its digits is 21504, while the sum is 35.

The square root of 2186142227 is about 46756.1998776633. The cubic root of 2186142227 is about 1297.8548897492.

The spelling of 2186142227 in words is "two billion, one hundred eighty-six million, one hundred forty-two thousand, two hundred twenty-seven".