2943641 has 2 divisors, whose sum is σ = 2943642. Its totient is φ = 2943640.

The previous prime is 2943631. The next prime is 2943643. The reversal of 2943641 is 1463492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1700416 + 1243225 = 1304^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 2943641 - 2¹⁴ = 2927257 is a prime.

Together with 2943643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2943643) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1471820 + 1471821.

It is an arithmetic number, because the mean of its divisors is an integer number (1471821).

2^2943641 is an apocalyptic number.

It is an amenable number.

2943641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2943641 is an equidigital number, since it uses as much as digits as its factorization.

2943641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 2943641 is about 1715.7042285895. The cubic root of 2943641 is about 143.3160889055.

The spelling of 2943641 in words is "two million, nine hundred forty-three thousand, six hundred forty-one".