1791066816 has 420 divisors, whose sum is σ = 6748079976. Its totient is φ = 464486400.

The previous prime is 1791066793. The next prime is 1791066853. The reversal of 1791066816 is 6186601971.

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 59 ways as a sum of consecutive naturals, for example, 2793856 + ... + 2794496.

Almost surely, 2^1791066816 is an apocalyptic number.

1791066816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1791066816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3374039988).

1791066816 is an abundant number, since it is smaller than the sum of its proper divisors (4957013160).

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

1791066816 is a wasteful number, since it uses less digits than its factorization.

1791066816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1791066816 is about 42320.9973417451. The cubic root of 1791066816 is about 1214.4247116470.

The spelling of 1791066816 in words is "one billion, seven hundred ninety-one million, sixty-six thousand, eight hundred sixteen".