2045904043 has 2 divisors, whose sum is σ = 2045904044. Its totient is φ = 2045904042.

The previous prime is 2045903989. The next prime is 2045904061. The reversal of 2045904043 is 3404095402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2045904043 - 2²⁵ = 2012349611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2045903996 and 2045904014.

It is not a weakly prime, because it can be changed into another prime (2045904943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022952021 + 1022952022.

It is an arithmetic number, because the mean of its divisors is an integer number (1022952022).

Almost surely, 2^2045904043 is an apocalyptic number.

2045904043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045904043 is an equidigital number, since it uses as much as digits as its factorization.

2045904043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2045904043 is about 45231.6707960252. The cubic root of 2045904043 is about 1269.4874743866.

Adding to 2045904043 its reverse (3404095402), we get a palindrome (5449999445).

The spelling of 2045904043 in words is "two billion, forty-five million, nine hundred four thousand, forty-three".