1782664868 has 12 divisors (see below), whose sum is σ = 3121247472. Its totient is φ = 890879880.

The previous prime is 1782664861. The next prime is 1782664879. The reversal of 1782664868 is 8684662871.

It is not an unprimeable number, because it can be changed into a prime (1782664861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104198 + ... + 120093.

It is an arithmetic number, because the mean of its divisors is an integer number (260103956).

Almost surely, 2^1782664868 is an apocalyptic number.

It is an amenable number.

1782664868 is a deficient number, since it is larger than the sum of its proper divisors (1338582604).

1782664868 is a wasteful number, since it uses less digits than its factorization.

1782664868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226282 (or 226280 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 56.

The square root of 1782664868 is about 42221.6161225503. The cubic root of 1782664868 is about 1212.5227669654.

The spelling of 1782664868 in words is "one billion, seven hundred eighty-two million, six hundred sixty-four thousand, eight hundred sixty-eight".