1868444259843 has 24 divisors (see below), whose sum is σ = 2947113754560. Its totient is φ = 1049586116880.

The previous prime is 1868444259821. The next prime is 1868444259863. The reversal of 1868444259843 is 3489524448681.

It is not a de Polignac number, because 1868444259843 - 2⁶ = 1868444259779 is a prime.

It is a super-2 number, since 2×1868444259843² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1868444259863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107707473 + ... + 107724818.

It is an arithmetic number, because the mean of its divisors is an integer number (122796406440).

Almost surely, 2^{1868444259843} is an apocalyptic number.

1868444259843 is a deficient number, since it is larger than the sum of its proper divisors (1078669494717).

1868444259843 is a wasteful number, since it uses less digits than its factorization.

1868444259843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215432367 (or 215432360 counting only the distinct ones).

The product of its digits is 212336640, while the sum is 66.

The spelling of 1868444259843 in words is "one trillion, eight hundred sixty-eight billion, four hundred forty-four million, two hundred fifty-nine thousand, eight hundred forty-three".