3284186906821 has 2 divisors, whose sum is σ = 3284186906822. Its totient is φ = 3284186906820.

The previous prime is 3284186906789. The next prime is 3284186906857. The reversal of 3284186906821 is 1286096814823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2545575576196 + 738611330625 = 1595486^2 + 859425^2 .

It is a cyclic number.

It is not a de Polignac number, because 3284186906821 - 2⁵ = 3284186906789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3284186906321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1642093453410 + 1642093453411.

It is an arithmetic number, because the mean of its divisors is an integer number (1642093453411).

Almost surely, 2^{3284186906821} is an apocalyptic number.

It is an amenable number.

3284186906821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3284186906821 is an equidigital number, since it uses as much as digits as its factorization.

3284186906821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The spelling of 3284186906821 in words is "three trillion, two hundred eighty-four billion, one hundred eighty-six million, nine hundred six thousand, eight hundred twenty-one".