2091993611 has 2 divisors, whose sum is σ = 2091993612. Its totient is φ = 2091993610.

The previous prime is 2091993601. The next prime is 2091993649. The reversal of 2091993611 is 1163991902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2091993611 - 2¹⁴ = 2091977227 is a prime.

It is not a weakly prime, because it can be changed into another prime (2091993601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045996805 + 1045996806.

It is an arithmetic number, because the mean of its divisors is an integer number (1045996806).

Almost surely, 2^2091993611 is an apocalyptic number.

2091993611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091993611 is an equidigital number, since it uses as much as digits as its factorization.

2091993611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 2091993611 is about 45738.3166611978. The cubic root of 2091993611 is about 1278.9496614233.

The spelling of 2091993611 in words is "two billion, ninety-one million, nine hundred ninety-three thousand, six hundred eleven".