3609631649 has 8 divisors (see below), whose sum is σ = 3905721792. Its totient is φ = 3316173840.

The previous prime is 3609631639. The next prime is 3609631673. The reversal of 3609631649 is 9461369063.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3609631649 - 2⁸ = 3609631393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3609631639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655229 + ... + 660714.

It is an arithmetic number, because the mean of its divisors is an integer number (488215224).

Almost surely, 2^3609631649 is an apocalyptic number.

It is an amenable number.

3609631649 is a deficient number, since it is larger than the sum of its proper divisors (296090143).

3609631649 is a wasteful number, since it uses less digits than its factorization.

3609631649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316167.

The product of its (nonzero) digits is 629856, while the sum is 47.

The square root of 3609631649 is about 60080.2101277950. The cubic root of 3609631649 is about 1533.9844668025.

The spelling of 3609631649 in words is "three billion, six hundred nine million, six hundred thirty-one thousand, six hundred forty-nine".