2187941 has 4 divisors (see below), whose sum is σ = 2500512. Its totient is φ = 1875372.

The previous prime is 2187929. The next prime is 2187943. The reversal of 2187941 is 1497812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2187941 - 2⁶ = 2187877 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2187898 and 2187907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156275 + ... + 156288.

It is an arithmetic number, because the mean of its divisors is an integer number (625128).

2^2187941 is an apocalyptic number.

It is an amenable number.

2187941 is a deficient number, since it is larger than the sum of its proper divisors (312571).

2187941 is an equidigital number, since it uses as much as digits as its factorization.

2187941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312570.

The product of its digits is 4032, while the sum is 32.

The square root of 2187941 is about 1479.1690234723. The cubic root of 2187941 is about 129.8210753502.

The spelling of 2187941 in words is "two million, one hundred eighty-seven thousand, nine hundred forty-one".