2811378091 has 2 divisors, whose sum is σ = 2811378092. Its totient is φ = 2811378090.

The previous prime is 2811378083. The next prime is 2811378107. The reversal of 2811378091 is 1908731182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2811378091 - 2³ = 2811378083 is a prime.

It is not a weakly prime, because it can be changed into another prime (2811378391) 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 as a sum of consecutive naturals, namely, 1405689045 + 1405689046.

It is an arithmetic number, because the mean of its divisors is an integer number (1405689046).

Almost surely, 2^2811378091 is an apocalyptic number.

2811378091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2811378091 is an equidigital number, since it uses as much as digits as its factorization.

2811378091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 2811378091 is about 53022.4300744506. The cubic root of 2811378091 is about 1411.3663282634.

The spelling of 2811378091 in words is "two billion, eight hundred eleven million, three hundred seventy-eight thousand, ninety-one".