3661043009 has 16 divisors (see below), whose sum is σ = 4117677312. Its totient is φ = 3229668288.

The previous prime is 3661042993. The next prime is 3661043047. The reversal of 3661043009 is 9003401663.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 3661043009 - 2⁴ = 3661042993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3661043069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384899 + ... + 394295.

It is an arithmetic number, because the mean of its divisors is an integer number (257354832).

Almost surely, 2^3661043009 is an apocalyptic number.

It is an amenable number.

3661043009 is a deficient number, since it is larger than the sum of its proper divisors (456634303).

3661043009 is a wasteful number, since it uses less digits than its factorization.

3661043009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10736.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 3661043009 is about 60506.5534384500. The cubic root of 3661043009 is about 1541.2329207137.

The spelling of 3661043009 in words is "three billion, six hundred sixty-one million, forty-three thousand, nine".