2189743 has 2 divisors, whose sum is σ = 2189744. Its totient is φ = 2189742.

The previous prime is 2189741. The next prime is 2189767. The reversal of 2189743 is 3479812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2189743 - 2¹ = 2189741 is a prime.

Together with 2189741, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2189699 and 2189708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2189741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094871 + 1094872.

It is an arithmetic number, because the mean of its divisors is an integer number (1094872).

2^2189743 is an apocalyptic number.

2189743 is a deficient number, since it is larger than the sum of its proper divisors (1).

2189743 is an equidigital number, since it uses as much as digits as its factorization.

2189743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 2189743 is about 1479.7780238941. The cubic root of 2189743 is about 129.8567060159.

The spelling of 2189743 in words is "two million, one hundred eighty-nine thousand, seven hundred forty-three".