3645704449 has 2 divisors, whose sum is σ = 3645704450. Its totient is φ = 3645704448.

The previous prime is 3645704429. The next prime is 3645704453. The reversal of 3645704449 is 9444075463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3173294224 + 472410225 = 56332^2 + 21735^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645704449 - 2¹⁵ = 3645671681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3645704399 and 3645704408.

It is not a weakly prime, because it can be changed into another prime (3645704429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822852224 + 1822852225.

It is an arithmetic number, because the mean of its divisors is an integer number (1822852225).

Almost surely, 2^3645704449 is an apocalyptic number.

It is an amenable number.

3645704449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645704449 is an equidigital number, since it uses as much as digits as its factorization.

3645704449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The square root of 3645704449 is about 60379.6691693487. The cubic root of 3645704449 is about 1539.0774889022.

The spelling of 3645704449 in words is "three billion, six hundred forty-five million, seven hundred four thousand, four hundred forty-nine".