2043218069 has 2 divisors, whose sum is σ = 2043218070. Its totient is φ = 2043218068.

The previous prime is 2043218039. The next prime is 2043218071. The reversal of 2043218069 is 9608123402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1878095569 + 165122500 = 43337^2 + 12850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043218069 - 2²⁴ = 2026440853 is a prime.

It is a super-2 number, since 2×2043218069² = 8349480154976177522, which contains 22 as substring.

Together with 2043218071, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2043218039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021609034 + 1021609035.

It is an arithmetic number, because the mean of its divisors is an integer number (1021609035).

Almost surely, 2^2043218069 is an apocalyptic number.

It is an amenable number.

2043218069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043218069 is an equidigital number, since it uses as much as digits as its factorization.

2043218069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 2043218069 is about 45201.9697469037. The cubic root of 2043218069 is about 1268.9316803770.

The spelling of 2043218069 in words is "two billion, forty-three million, two hundred eighteen thousand, sixty-nine".