1866444273068 has 48 divisors (see below), whose sum is σ = 3348550352448. Its totient is φ = 910022400000.

The previous prime is 1866444273061. The next prime is 1866444273079. The reversal of 1866444273068 is 8603724446681.

It is a super-2 number, since 2×1866444273068² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1866444272998 and 1866444273016.

It is not an unprimeable number, because it can be changed into a prime (1866444273061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27990968 + ... + 28057568.

It is an arithmetic number, because the mean of its divisors is an integer number (69761465676).

Almost surely, 2^{1866444273068} is an apocalyptic number.

It is an amenable number.

1866444273068 is a deficient number, since it is larger than the sum of its proper divisors (1482106079380).

1866444273068 is a wasteful number, since it uses less digits than its factorization.

1866444273068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67754 (or 67752 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 59.

The spelling of 1866444273068 in words is "one trillion, eight hundred sixty-six billion, four hundred forty-four million, two hundred seventy-three thousand, sixty-eight".