3319782388729 has 3 divisors (see below), whose sum is σ = 3319784210757. Its totient is φ = 3319780566702.

The previous prime is 3319782388717. The next prime is 3319782388751. The reversal of 3319782388729 is 9278832879133.

The square root of 3319782388729 is 1822027.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 3319782388729 - 2⁹ = 3319782388217 is a prime.

It is a super-2 number, since 2×3319782388729² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3319782388799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 911014 + ... + 2733040.

It is an arithmetic number, because the mean of its divisors is an integer number (1106594736919).

Almost surely, 2^{3319782388729} is an apocalyptic number.

3319782388729 is the 1822027-th square number.

3319782388729 is the 911014-th centered octagonal number.

It is an amenable number.

3319782388729 is a deficient number, since it is larger than the sum of its proper divisors (1822028).

3319782388729 is an frugal number, since it uses more digits than its factorization.

3319782388729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644054 (or 1822027 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 70.

The spelling of 3319782388729 in words is "three trillion, three hundred nineteen billion, seven hundred eighty-two million, three hundred eighty-eight thousand, seven hundred twenty-nine".