2185494137 has 2 divisors, whose sum is σ = 2185494138. Its totient is φ = 2185494136.

The previous prime is 2185494071. The next prime is 2185494139. The reversal of 2185494137 is 7314945812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127683561 + 1057810576 = 33581^2 + 32524^2 .

It is a cyclic number.

It is not a de Polignac number, because 2185494137 - 2¹⁰ = 2185493113 is a prime.

It is a super-2 number, since 2×2185494137² = 9552769245722749538, which contains 22 as substring.

Together with 2185494139, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2185494139) 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, 1092747068 + 1092747069.

It is an arithmetic number, because the mean of its divisors is an integer number (1092747069).

Almost surely, 2^2185494137 is an apocalyptic number.

It is an amenable number.

2185494137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185494137 is an equidigital number, since it uses as much as digits as its factorization.

2185494137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 2185494137 is about 46749.2688392022. The cubic root of 2185494137 is about 1297.7266257694.

The spelling of 2185494137 in words is "two billion, one hundred eighty-five million, four hundred ninety-four thousand, one hundred thirty-seven".