3661838850646 has 8 divisors (see below), whose sum is σ = 5496916310424. Its totient is φ = 1829533413840.

The previous prime is 3661838850623. The next prime is 3661838850647. The reversal of 3661838850646 is 6460588381663.

3661838850646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3661838850647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693002440 + ... + 693007723.

It is an arithmetic number, because the mean of its divisors is an integer number (687114538803).

Almost surely, 2^{3661838850646} is an apocalyptic number.

3661838850646 is a deficient number, since it is larger than the sum of its proper divisors (1835077459778).

3661838850646 is a wasteful number, since it uses less digits than its factorization.

3661838850646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386011486.

The product of its (nonzero) digits is 119439360, while the sum is 64.

The spelling of 3661838850646 in words is "three trillion, six hundred sixty-one billion, eight hundred thirty-eight million, eight hundred fifty thousand, six hundred forty-six".