1973140566 has 8 divisors (see below), whose sum is σ = 3946281144. Its totient is φ = 657713520.

The previous prime is 1973140501. The next prime is 1973140597. The reversal of 1973140566 is 6650413791.

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

1973140566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164428375 + ... + 164428386.

It is an arithmetic number, because the mean of its divisors is an integer number (493285143).

Almost surely, 2^1973140566 is an apocalyptic number.

1973140566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1973140566 is a wasteful number, since it uses less digits than its factorization.

1973140566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328856766.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1973140566 is about 44420.0468932666. The cubic root of 1973140566 is about 1254.2554836602.

The spelling of 1973140566 in words is "one billion, nine hundred seventy-three million, one hundred forty thousand, five hundred sixty-six".