1894621012742 has 8 divisors (see below), whose sum is σ = 2841943316976. Its totient is φ = 947306573752.

The previous prime is 1894621012741. The next prime is 1894621012747. The reversal of 1894621012742 is 2472101264981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894621012741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321853 + ... + 2352984.

It is an arithmetic number, because the mean of its divisors is an integer number (355242914622).

Almost surely, 2^{1894621012742} is an apocalyptic number.

1894621012742 is a deficient number, since it is larger than the sum of its proper divisors (947322304234).

1894621012742 is a wasteful number, since it uses less digits than its factorization.

1894621012742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932622.

The product of its (nonzero) digits is 387072, while the sum is 47.

The spelling of 1894621012742 in words is "one trillion, eight hundred ninety-four billion, six hundred twenty-one million, twelve thousand, seven hundred forty-two".