2265843947 has 2 divisors, whose sum is σ = 2265843948. Its totient is φ = 2265843946.

The previous prime is 2265843911. The next prime is 2265843953. The reversal of 2265843947 is 7493485622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2265843947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2265843895 and 2265843904.

It is not a weakly prime, because it can be changed into another prime (2265843977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1132921973 + 1132921974.

It is an arithmetic number, because the mean of its divisors is an integer number (1132921974).

Almost surely, 2^2265843947 is an apocalyptic number.

2265843947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265843947 is an equidigital number, since it uses as much as digits as its factorization.

2265843947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 50.

The square root of 2265843947 is about 47600.8817880509. The cubic root of 2265843947 is about 1313.4392750751.

The spelling of 2265843947 in words is "two billion, two hundred sixty-five million, eight hundred forty-three thousand, nine hundred forty-seven".