2163841 has 3 divisors (see below), whose sum is σ = 2165313. Its totient is φ = 2162370.

The previous prime is 2163829. The next prime is 2163851. The reversal of 2163841 is 1483612.

The square root of 2163841 is 1471.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2163841 - 2⁵ = 2163809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2163851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 736 + ... + 2206.

It is an arithmetic number, because the mean of its divisors is an integer number (721771).

2^2163841 is an apocalyptic number.

2163841 is the 1471-st square number.

2163841 is the 736-th centered octagonal number.

It is an amenable number.

2163841 is a deficient number, since it is larger than the sum of its proper divisors (1472).

2163841 is an frugal number, since it uses more digits than its factorization.

2163841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 1471 counting only the distinct ones).

The product of its digits is 1152, while the sum is 25.

The cubic root of 2163841 is about 129.3426581000.

Multiplying 2163841 by its sum of digits (25), we get a square (54096025 = 7355²).

The spelling of 2163841 in words is "two million, one hundred sixty-three thousand, eight hundred forty-one".