1861194846412 has 12 divisors (see below), whose sum is σ = 3553190161416. Its totient is φ = 845997657440.

The previous prime is 1861194846383. The next prime is 1861194846421. The reversal of 1861194846412 is 2146484911681.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21149941393 + ... + 21149941480.

It is an arithmetic number, because the mean of its divisors is an integer number (296099180118).

Almost surely, 2^{1861194846412} is an apocalyptic number.

It is an amenable number.

1861194846412 is a deficient number, since it is larger than the sum of its proper divisors (1691995315004).

1861194846412 is a wasteful number, since it uses less digits than its factorization.

1861194846412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42299882888 (or 42299882886 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 55.

The spelling of 1861194846412 in words is "one trillion, eight hundred sixty-one billion, one hundred ninety-four million, eight hundred forty-six thousand, four hundred twelve".