2119643 has 2 divisors, whose sum is σ = 2119644. Its totient is φ = 2119642.

The previous prime is 2119631. The next prime is 2119651. The reversal of 2119643 is 3469112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2119643 - 2⁴ = 2119627 is a prime.

It is not a weakly prime, because it can be changed into another prime (2119603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059821 + 1059822.

It is an arithmetic number, because the mean of its divisors is an integer number (1059822).

2^2119643 is an apocalyptic number.

2119643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119643 is an equidigital number, since it uses as much as digits as its factorization.

2119643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 2119643 is about 1455.8993783912. The cubic root of 2119643 is about 128.4559544623.

The spelling of 2119643 in words is "two million, one hundred nineteen thousand, six hundred forty-three".