11875813 has 2 divisors, whose sum is σ = 11875814. Its totient is φ = 11875812.

The previous prime is 11875811. The next prime is 11875837. The reversal of 11875813 is 31857811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10355524 + 1520289 = 3218^2 + 1233^2 .

It is a cyclic number.

It is not a de Polignac number, because 11875813 - 2¹ = 11875811 is a prime.

Together with 11875811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11875811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5937906 + 5937907.

It is an arithmetic number, because the mean of its divisors is an integer number (5937907).

Almost surely, 2^11875813 is an apocalyptic number.

It is an amenable number.

11875813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11875813 is an equidigital number, since it uses as much as digits as its factorization.

11875813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 34.

The square root of 11875813 is about 3446.1301484419. The cubic root of 11875813 is about 228.1503381626.

The spelling of 11875813 in words is "eleven million, eight hundred seventy-five thousand, eight hundred thirteen".