2185641 has 12 divisors (see below), whose sum is σ = 3224832. Its totient is φ = 1425816.

The previous prime is 2185637. The next prime is 2185649. The reversal of 2185641 is 1465812.

2185641 is a `hidden beast` number, since 2 + 18 + 5 + 641 = 666.

It is not a de Polignac number, because 2185641 - 2² = 2185637 is a prime.

2185641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2185649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2161 + ... + 3006.

It is an arithmetic number, because the mean of its divisors is an integer number (268736).

2^2185641 is an apocalyptic number.

It is an amenable number.

2185641 is a deficient number, since it is larger than the sum of its proper divisors (1039191).

2185641 is a wasteful number, since it uses less digits than its factorization.

2185641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220 (or 5217 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2185641 is about 1478.3913554942. The cubic root of 2185641 is about 129.7755693758.

The spelling of 2185641 in words is "two million, one hundred eighty-five thousand, six hundred forty-one".