1868363333844 has 144 divisors (see below), whose sum is σ = 5303999772288. Its totient is φ = 509427781632.

The previous prime is 1868363333819. The next prime is 1868363333869. The reversal of 1868363333844 is 4483333638681.

It is an interprime number because it is at equal distance from previous prime (1868363333819) and next prime (1868363333869).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5696364 + ... + 6015420.

It is an arithmetic number, because the mean of its divisors is an integer number (36833331752).

Almost surely, 2^{1868363333844} is an apocalyptic number.

1868363333844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1868363333844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2651999886144).

1868363333844 is an abundant number, since it is smaller than the sum of its proper divisors (3435636438444).

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

1868363333844 is a wasteful number, since it uses less digits than its factorization.

1868363333844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319534 (or 319525 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 60.

The spelling of 1868363333844 in words is "one trillion, eight hundred sixty-eight billion, three hundred sixty-three million, three hundred thirty-three thousand, eight hundred forty-four".