1871340011 has 2 divisors, whose sum is σ = 1871340012. Its totient is φ = 1871340010.

The previous prime is 1871339983. The next prime is 1871340061. The reversal of 1871340011 is 1100431781.

It is a weak prime.

It is an emirp because it is prime and its reverse (1100431781) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1871340011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1871340061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 935670005 + 935670006.

It is an arithmetic number, because the mean of its divisors is an integer number (935670006).

Almost surely, 2^1871340011 is an apocalyptic number.

1871340011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1871340011 is an equidigital number, since it uses as much as digits as its factorization.

1871340011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 1871340011 is about 43258.9876326296. The cubic root of 1871340011 is about 1232.3031759615.

Adding to 1871340011 its reverse (1100431781), we get a palindrome (2971771792).

The spelling of 1871340011 in words is "one billion, eight hundred seventy-one million, three hundred forty thousand, eleven".