2043909073 has 2 divisors, whose sum is σ = 2043909074. Its totient is φ = 2043909072.

The previous prime is 2043909061. The next prime is 2043909079. The reversal of 2043909073 is 3709093402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1923962769 + 119946304 = 43863^2 + 10952^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2043909073 is a prime.

It is not a weakly prime, because it can be changed into another prime (2043909079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1021954536 + 1021954537.

It is an arithmetic number, because the mean of its divisors is an integer number (1021954537).

Almost surely, 2^2043909073 is an apocalyptic number.

It is an amenable number.

2043909073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2043909073 is an equidigital number, since it uses as much as digits as its factorization.

2043909073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 2043909073 is about 45209.6126172300. The cubic root of 2043909073 is about 1269.0747125953.

The spelling of 2043909073 in words is "two billion, forty-three million, nine hundred nine thousand, seventy-three".