2185213427 has 4 divisors (see below), whose sum is σ = 2300224680. Its totient is φ = 2070202176.

The previous prime is 2185213421. The next prime is 2185213447. The reversal of 2185213427 is 7243125812.

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 2185213427 - 2⁴ = 2185213411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2185213421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57505598 + ... + 57505635.

It is an arithmetic number, because the mean of its divisors is an integer number (575056170).

Almost surely, 2^2185213427 is an apocalyptic number.

2185213427 is a deficient number, since it is larger than the sum of its proper divisors (115011253).

2185213427 is a wasteful number, since it uses less digits than its factorization.

2185213427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115011252.

The product of its digits is 26880, while the sum is 35.

The square root of 2185213427 is about 46746.2664498460. The cubic root of 2185213427 is about 1297.6710623718.

The spelling of 2185213427 in words is "two billion, one hundred eighty-five million, two hundred thirteen thousand, four hundred twenty-seven".