3865249573 has 2 divisors, whose sum is σ = 3865249574. Its totient is φ = 3865249572.

The previous prime is 3865249547. The next prime is 3865249579. The reversal of 3865249573 is 3759425683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3861628164 + 3621409 = 62142^2 + 1903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3865249573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3865249573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3865249579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1932624786 + 1932624787.

It is an arithmetic number, because the mean of its divisors is an integer number (1932624787).

Almost surely, 2^3865249573 is an apocalyptic number.

It is an amenable number.

3865249573 is a deficient number, since it is larger than the sum of its proper divisors (1).

3865249573 is an equidigital number, since it uses as much as digits as its factorization.

3865249573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 52.

The square root of 3865249573 is about 62171.1313472740. The cubic root of 3865249573 is about 1569.3718088047.

The spelling of 3865249573 in words is "three billion, eight hundred sixty-five million, two hundred forty-nine thousand, five hundred seventy-three".