1866866701841 has 8 divisors (see below), whose sum is σ = 1932456153600. Its totient is φ = 1801612746720.

The previous prime is 1866866701837. The next prime is 1866866701867. The reversal of 1866866701841 is 1481076686681.

It is a happy number.

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 1866866701841 - 2² = 1866866701837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1866866703841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83862836 + ... + 83885093.

It is an arithmetic number, because the mean of its divisors is an integer number (241557019200).

Almost surely, 2^{1866866701841} is an apocalyptic number.

It is an amenable number.

1866866701841 is a deficient number, since it is larger than the sum of its proper divisors (65589451759).

1866866701841 is a wasteful number, since it uses less digits than its factorization.

1866866701841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167748319.

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 1866866701841 in words is "one trillion, eight hundred sixty-six billion, eight hundred sixty-six million, seven hundred one thousand, eight hundred forty-one".