3649420289 has 2 divisors, whose sum is σ = 3649420290. Its totient is φ = 3649420288.

The previous prime is 3649420261. The next prime is 3649420321. The reversal of 3649420289 is 9820249463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3229989889 + 419430400 = 56833^2 + 20480^2 .

It is a cyclic number.

It is not a de Polignac number, because 3649420289 - 2²⁴ = 3632643073 is a prime.

It is not a weakly prime, because it can be changed into another prime (3649420589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1824710144 + 1824710145.

It is an arithmetic number, because the mean of its divisors is an integer number (1824710145).

Almost surely, 2^3649420289 is an apocalyptic number.

It is an amenable number.

3649420289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3649420289 is an equidigital number, since it uses as much as digits as its factorization.

3649420289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 3649420289 is about 60410.4319550854. The cubic root of 3649420289 is about 1539.6002066998.

The spelling of 3649420289 in words is "three billion, six hundred forty-nine million, four hundred twenty thousand, two hundred eighty-nine".