1965500566 has 8 divisors (see below), whose sum is σ = 2985570720. Its totient is φ = 970310328.

The previous prime is 1965500561. The next prime is 1965500573. The reversal of 1965500566 is 6650055691.

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 (1965500561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6219781 + ... + 6220096.

It is an arithmetic number, because the mean of its divisors is an integer number (373196340).

Almost surely, 2^1965500566 is an apocalyptic number.

1965500566 is a deficient number, since it is larger than the sum of its proper divisors (1020070154).

1965500566 is a wasteful number, since it uses less digits than its factorization.

1965500566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12439958.

The product of its (nonzero) digits is 243000, while the sum is 43.

The square root of 1965500566 is about 44333.9662786898. The cubic root of 1965500566 is about 1252.6345641032.

The spelling of 1965500566 in words is "one billion, nine hundred sixty-five million, five hundred thousand, five hundred sixty-six".