1891947941942 has 16 divisors (see below), whose sum is σ = 2840046105600. Its totient is φ = 945266143080.

The previous prime is 1891947941927. The next prime is 1891947941951. The reversal of 1891947941942 is 2491497491981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16848659 + ... + 16960577.

It is an arithmetic number, because the mean of its divisors is an integer number (177502881600).

Almost surely, 2^{1891947941942} is an apocalyptic number.

1891947941942 is a deficient number, since it is larger than the sum of its proper divisors (948098163658).

1891947941942 is a wasteful number, since it uses less digits than its factorization.

1891947941942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118171.

The product of its digits is 47029248, while the sum is 68.

The spelling of 1891947941942 in words is "one trillion, eight hundred ninety-one billion, nine hundred forty-seven million, nine hundred forty-one thousand, nine hundred forty-two".