3204993781 has 8 divisors (see below), whose sum is σ = 3532402944. Its totient is φ = 2883592320.

The previous prime is 3204993769. The next prime is 3204993797. The reversal of 3204993781 is 1873994023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3204993781 - 2⁹ = 3204993269 is a prime.

It is a super-2 number, since 2×3204993781² = 20543970272497351922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3204993721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500805 + ... + 1502938.

It is an arithmetic number, because the mean of its divisors is an integer number (441550368).

Almost surely, 2^3204993781 is an apocalyptic number.

It is an amenable number.

3204993781 is a deficient number, since it is larger than the sum of its proper divisors (327409163).

3204993781 is a wasteful number, since it uses less digits than its factorization.

3204993781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003851.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 3204993781 is about 56612.6644930266. The cubic root of 3204993781 is about 1474.3787529898.

The spelling of 3204993781 in words is "three billion, two hundred four million, nine hundred ninety-three thousand, seven hundred eighty-one".