1894243385668 has 12 divisors (see below), whose sum is σ = 3316123965952. Its totient is φ = 946779395400.

The previous prime is 1894243385659. The next prime is 1894243385669. The reversal of 1894243385668 is 8665833424981.

It is not an unprimeable number, because it can be changed into a prime (1894243385669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85561908 + ... + 85584043.

Almost surely, 2^{1894243385668} is an apocalyptic number.

It is an amenable number.

1894243385668 is a deficient number, since it is larger than the sum of its proper divisors (1421880580284).

1894243385668 is a wasteful number, since it uses less digits than its factorization.

1894243385668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171148722 (or 171148720 counting only the distinct ones).

The product of its digits is 238878720, while the sum is 67.

The spelling of 1894243385668 in words is "one trillion, eight hundred ninety-four billion, two hundred forty-three million, three hundred eighty-five thousand, six hundred sixty-eight".