2091912841 has 2 divisors, whose sum is σ = 2091912842. Its totient is φ = 2091912840.

The previous prime is 2091912821. The next prime is 2091912847. The reversal of 2091912841 is 1482191902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2043401616 + 48511225 = 45204^2 + 6965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2091912841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2091912841.

It is not a weakly prime, because it can be changed into another prime (2091912847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045956420 + 1045956421.

It is an arithmetic number, because the mean of its divisors is an integer number (1045956421).

Almost surely, 2^2091912841 is an apocalyptic number.

It is an amenable number.

2091912841 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091912841 is an equidigital number, since it uses as much as digits as its factorization.

2091912841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 2091912841 is about 45737.4336949506. The cubic root of 2091912841 is about 1278.9332015111.

The spelling of 2091912841 in words is "two billion, ninety-one million, nine hundred twelve thousand, eight hundred forty-one".