3661904043 has 12 divisors (see below), whose sum is σ = 6045048048. Its totient is φ = 2092516560.

The previous prime is 3661904041. The next prime is 3661904063. The reversal of 3661904043 is 3404091663.

3661904043 is a `hidden beast` number, since 3 + 66 + 190 + 404 + 3 = 666.

It is not a de Polignac number, because 3661904043 - 2¹ = 3661904041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3661903989 and 3661904007.

It is not an unprimeable number, because it can be changed into a prime (3661904041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29062668 + ... + 29062793.

It is an arithmetic number, because the mean of its divisors is an integer number (503754004).

Almost surely, 2^3661904043 is an apocalyptic number.

3661904043 is a deficient number, since it is larger than the sum of its proper divisors (2383144005).

3661904043 is a wasteful number, since it uses less digits than its factorization.

3661904043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58125474 (or 58125471 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 3661904043 is about 60513.6682328877. The cubic root of 3661904043 is about 1541.3537378252.

The spelling of 3661904043 in words is "three billion, six hundred sixty-one million, nine hundred four thousand, forty-three".