1810938137 has 2 divisors, whose sum is σ = 1810938138. Its totient is φ = 1810938136.

The previous prime is 1810938071. The next prime is 1810938139. The reversal of 1810938137 is 7318390181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1696533721 + 114404416 = 41189^2 + 10696^2 .

It is an emirp because it is prime and its reverse (7318390181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1810938137 - 2¹⁰ = 1810937113 is a prime.

Together with 1810938139, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1810938094 and 1810938103.

It is not a weakly prime, because it can be changed into another prime (1810938139) 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, 905469068 + 905469069.

It is an arithmetic number, because the mean of its divisors is an integer number (905469069).

Almost surely, 2^1810938137 is an apocalyptic number.

It is an amenable number.

1810938137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1810938137 is an equidigital number, since it uses as much as digits as its factorization.

1810938137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 1810938137 is about 42555.1188107847. The cubic root of 1810938137 is about 1218.8994233379.

It can be divided in two parts, 181093 and 8137, that multiplied together give a palindrome (1473553741).

The spelling of 1810938137 in words is "one billion, eight hundred ten million, nine hundred thirty-eight thousand, one hundred thirty-seven".