11866157 has 2 divisors, whose sum is σ = 11866158. Its totient is φ = 11866156.

The previous prime is 11866109. The next prime is 11866177. The reversal of 11866157 is 75166811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11519236 + 346921 = 3394^2 + 589^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11866157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11866177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5933078 + 5933079.

It is an arithmetic number, because the mean of its divisors is an integer number (5933079).

Almost surely, 2^11866157 is an apocalyptic number.

It is an amenable number.

11866157 is a deficient number, since it is larger than the sum of its proper divisors (1).

11866157 is an equidigital number, since it uses as much as digits as its factorization.

11866157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 11866157 is about 3444.7288717692. The cubic root of 11866157 is about 228.0884864810.

The spelling of 11866157 in words is "eleven million, eight hundred sixty-six thousand, one hundred fifty-seven".