2185494071 has 2 divisors, whose sum is σ = 2185494072. Its totient is φ = 2185494070.

The previous prime is 2185494037. The next prime is 2185494137. The reversal of 2185494071 is 1704945812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2185494071 - 2¹⁰ = 2185493047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185494271) 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, 1092747035 + 1092747036.

It is an arithmetic number, because the mean of its divisors is an integer number (1092747036).

Almost surely, 2^2185494071 is an apocalyptic number.

2185494071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185494071 is an equidigital number, since it uses as much as digits as its factorization.

2185494071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 2185494071 is about 46749.2681333088. The cubic root of 2185494071 is about 1297.7266127060.

The spelling of 2185494071 in words is "two billion, one hundred eighty-five million, four hundred ninety-four thousand, seventy-one".