1782321164 has 12 divisors (see below), whose sum is σ = 3358989984. Its totient is φ = 822609744.

The previous prime is 1782321143. The next prime is 1782321199. The reversal of 1782321164 is 4611232871.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17137652 + ... + 17137755.

It is an arithmetic number, because the mean of its divisors is an integer number (279915832).

Almost surely, 2^1782321164 is an apocalyptic number.

It is an amenable number.

1782321164 is a deficient number, since it is larger than the sum of its proper divisors (1576668820).

1782321164 is a wasteful number, since it uses less digits than its factorization.

1782321164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34275424 (or 34275422 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1782321164 is about 42217.5456889668. The cubic root of 1782321164 is about 1212.4448357515. Note that the first 3 decimals are identical.

The spelling of 1782321164 in words is "one billion, seven hundred eighty-two million, three hundred twenty-one thousand, one hundred sixty-four".