1866853368366 has 48 divisors (see below), whose sum is σ = 4350691046016. Its totient is φ = 532477961904.

The previous prime is 1866853368329. The next prime is 1866853368371. The reversal of 1866853368366 is 6638633586681.

It is a self number, because there is not a number n which added to its sum of digits gives 1866853368366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5236146 + ... + 5581301.

It is an arithmetic number, because the mean of its divisors is an integer number (90639396792).

Almost surely, 2^{1866853368366} is an apocalyptic number.

1866853368366 is an abundant number, since it is smaller than the sum of its proper divisors (2483837677650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1866853368366 is a wasteful number, since it uses less digits than its factorization.

1866853368366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10818053 (or 10818046 counting only the distinct ones).

The product of its digits is 537477120, while the sum is 69.

The spelling of 1866853368366 in words is "one trillion, eight hundred sixty-six billion, eight hundred fifty-three million, three hundred sixty-eight thousand, three hundred sixty-six".