3281782641 has 8 divisors (see below), whose sum is σ = 4376323104. Its totient is φ = 2187548640.

The previous prime is 3281782627. The next prime is 3281782649. The reversal of 3281782641 is 1462871823.

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

It is not a de Polignac number, because 3281782641 - 2¹⁸ = 3281520497 is a prime.

It is a super-4 number, since 4×3281782641⁴ (a number of 39 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3281782593 and 3281782602.

It is not an unprimeable number, because it can be changed into a prime (3281782649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50340 + ... + 95381.

It is an arithmetic number, because the mean of its divisors is an integer number (547040388).

Almost surely, 2^3281782641 is an apocalyptic number.

It is an amenable number.

3281782641 is a deficient number, since it is larger than the sum of its proper divisors (1094540463).

3281782641 is a wasteful number, since it uses less digits than its factorization.

3281782641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153231.

The product of its digits is 129024, while the sum is 42.

The square root of 3281782641 is about 57286.8452700967. The cubic root of 3281782641 is about 1486.0608895937.

The spelling of 3281782641 in words is "three billion, two hundred eighty-one million, seven hundred eighty-two thousand, six hundred forty-one".