2043013409 has 2 divisors, whose sum is σ = 2043013410. Its totient is φ = 2043013408.

The previous prime is 2043013397. The next prime is 2043013411. The reversal of 2043013409 is 9043103402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2036536384 + 6477025 = 45128^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043013409 - 2¹⁶ = 2042947873 is a prime.

Together with 2043013411, 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 (2043013439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021506704 + 1021506705.

It is an arithmetic number, because the mean of its divisors is an integer number (1021506705).

Almost surely, 2^2043013409 is an apocalyptic number.

It is an amenable number.

2043013409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043013409 is an equidigital number, since it uses as much as digits as its factorization.

2043013409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 2043013409 is about 45199.7058508128. The cubic root of 2043013409 is about 1268.8893112286.

The spelling of 2043013409 in words is "two billion, forty-three million, thirteen thousand, four hundred nine".