1943193406842 has 24 divisors (see below), whose sum is σ = 4214220615540. Its totient is φ = 647120638080.

The previous prime is 1943193406793. The next prime is 1943193406901. The reversal of 1943193406842 is 2486043913491.

1943193406842 is a `hidden beast` number, since 1 + 9 + 4 + 3 + 193 + 406 + 8 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1596662215281 + 346531191561 = 1263591^2 + 588669^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50855167 + ... + 50893362.

Almost surely, 2^{1943193406842} is an apocalyptic number.

1943193406842 is an abundant number, since it is smaller than the sum of its proper divisors (2271027208698).

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

1943193406842 is a wasteful number, since it uses less digits than its factorization.

1943193406842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101749598 (or 101749595 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 1943193406842 in words is "one trillion, nine hundred forty-three billion, one hundred ninety-three million, four hundred six thousand, eight hundred forty-two".