11874536909 has 2 divisors, whose sum is σ = 11874536910. Its totient is φ = 11874536908.

The previous prime is 11874536827. The next prime is 11874536923. The reversal of 11874536909 is 90963547811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10654781284 + 1219755625 = 103222^2 + 34925^2 .

It is an emirp because it is prime and its reverse (90963547811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11874536909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11874536969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5937268454 + 5937268455.

It is an arithmetic number, because the mean of its divisors is an integer number (5937268455).

Almost surely, 2^11874536909 is an apocalyptic number.

It is an amenable number.

11874536909 is a deficient number, since it is larger than the sum of its proper divisors (1).

11874536909 is an equidigital number, since it uses as much as digits as its factorization.

11874536909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 11874536909 in words is "eleven billion, eight hundred seventy-four million, five hundred thirty-six thousand, nine hundred nine".