265673489 has 2 divisors, whose sum is σ = 265673490. Its totient is φ = 265673488.

The previous prime is 265673449. The next prime is 265673539. The reversal of 265673489 is 984376562.

It is a happy number.

It is an a-pointer prime, because the next prime (265673539) can be obtained adding 265673489 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149206225 + 116467264 = 12215^2 + 10792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-265673489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (265673449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132836744 + 132836745.

It is an arithmetic number, because the mean of its divisors is an integer number (132836745).

Almost surely, 2^265673489 is an apocalyptic number.

It is an amenable number.

265673489 is a deficient number, since it is larger than the sum of its proper divisors (1).

265673489 is an equidigital number, since it uses as much as digits as its factorization.

265673489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 50.

The square root of 265673489 is about 16299.4935197386. The cubic root of 265673489 is about 642.8595102253.

The spelling of 265673489 in words is "two hundred sixty-five million, six hundred seventy-three thousand, four hundred eighty-nine".