3651263449 has 2 divisors, whose sum is σ = 3651263450. Its totient is φ = 3651263448.

The previous prime is 3651263443. The next prime is 3651263461. The reversal of 3651263449 is 9443621563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2605387849 + 1045875600 = 51043^2 + 32340^2 .

It is an emirp because it is prime and its reverse (9443621563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3651263449 - 2¹⁹ = 3650739161 is a prime.

It is not a weakly prime, because it can be changed into another prime (3651263443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1825631724 + 1825631725.

It is an arithmetic number, because the mean of its divisors is an integer number (1825631725).

Almost surely, 2^3651263449 is an apocalyptic number.

It is an amenable number.

3651263449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3651263449 is an equidigital number, since it uses as much as digits as its factorization.

3651263449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 3651263449 is about 60425.6853415830. The cubic root of 3651263449 is about 1539.8593576232.

The spelling of 3651263449 in words is "three billion, six hundred fifty-one million, two hundred sixty-three thousand, four hundred forty-nine".