3644124409 has 2 divisors, whose sum is σ = 3644124410. Its totient is φ = 3644124408.

The previous prime is 3644124401. The next prime is 3644124443. The reversal of 3644124409 is 9044214463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3095253225 + 548871184 = 55635^2 + 23428^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644124409 - 2³ = 3644124401 is a prime.

It is not a weakly prime, because it can be changed into another prime (3644124401) 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, 1822062204 + 1822062205.

It is an arithmetic number, because the mean of its divisors is an integer number (1822062205).

Almost surely, 2^3644124409 is an apocalyptic number.

It is an amenable number.

3644124409 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644124409 is an equidigital number, since it uses as much as digits as its factorization.

3644124409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 3644124409 is about 60366.5835458658. The cubic root of 3644124409 is about 1538.8551125479.

The spelling of 3644124409 in words is "three billion, six hundred forty-four million, one hundred twenty-four thousand, four hundred nine".