3812067718891 has 2 divisors, whose sum is σ = 3812067718892. Its totient is φ = 3812067718890.

The previous prime is 3812067718883. The next prime is 3812067718939. The reversal of 3812067718891 is 1988177602183.

It is a weak prime.

It is an emirp because it is prime and its reverse (1988177602183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3812067718891 - 2³ = 3812067718883 is a prime.

It is not a weakly prime, because it can be changed into another prime (3812067718831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1906033859445 + 1906033859446.

It is an arithmetic number, because the mean of its divisors is an integer number (1906033859446).

Almost surely, 2^{3812067718891} is an apocalyptic number.

3812067718891 is a deficient number, since it is larger than the sum of its proper divisors (1).

3812067718891 is an equidigital number, since it uses as much as digits as its factorization.

3812067718891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8128512, while the sum is 61.

The spelling of 3812067718891 in words is "three trillion, eight hundred twelve billion, sixty-seven million, seven hundred eighteen thousand, eight hundred ninety-one".