4945265789 has 2 divisors, whose sum is σ = 4945265790. Its totient is φ = 4945265788.

The previous prime is 4945265777. The next prime is 4945265837. The reversal of 4945265789 is 9875625494.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3121121689 + 1824144100 = 55867^2 + 42710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4945265789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4945265729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2472632894 + 2472632895.

It is an arithmetic number, because the mean of its divisors is an integer number (2472632895).

Almost surely, 2^4945265789 is an apocalyptic number.

It is an amenable number.

4945265789 is a deficient number, since it is larger than the sum of its proper divisors (1).

4945265789 is an equidigital number, since it uses as much as digits as its factorization.

4945265789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 59.

The square root of 4945265789 is about 70322.5837764797. The cubic root of 4945265789 is about 1703.7134268908.

The spelling of 4945265789 in words is "four billion, nine hundred forty-five million, two hundred sixty-five thousand, seven hundred eighty-nine".