2144181 has 8 divisors (see below), whose sum is σ = 3078880. Its totient is φ = 1319472.

The previous prime is 2144179. The next prime is 2144183. The reversal of 2144181 is 1814412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2144179) and next prime (2144183).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2144181 - 2¹ = 2144179 is a prime.

It is a super-2 number, since 2×2144181² = 9195024321522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27451 + ... + 27528.

It is an arithmetic number, because the mean of its divisors is an integer number (384860).

2^2144181 is an apocalyptic number.

It is an amenable number.

2144181 is a deficient number, since it is larger than the sum of its proper divisors (934699).

2144181 is a wasteful number, since it uses less digits than its factorization.

2144181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54995.

The product of its digits is 256, while the sum is 21.

The square root of 2144181 is about 1464.3022229035. The cubic root of 2144181 is about 128.9497430575.

Adding to 2144181 its reverse (1814412), we get a palindrome (3958593).

The spelling of 2144181 in words is "two million, one hundred forty-four thousand, one hundred eighty-one".