11868187 has 2 divisors, whose sum is σ = 11868188. Its totient is φ = 11868186.

The previous prime is 11868169. The next prime is 11868191. The reversal of 11868187 is 78186811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11868187 is a prime.

It is not a weakly prime, because it can be changed into another prime (11868287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5934093 + 5934094.

It is an arithmetic number, because the mean of its divisors is an integer number (5934094).

Almost surely, 2^11868187 is an apocalyptic number.

11868187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11868187 is an equidigital number, since it uses as much as digits as its factorization.

11868187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 40.

The square root of 11868187 is about 3445.0235122565. The cubic root of 11868187 is about 228.1014924673.

It can be divided in two parts, 118 and 68187, that multiplied together give a triangular number (8046066 = T₄₀₁₁).

The spelling of 11868187 in words is "eleven million, eight hundred sixty-eight thousand, one hundred eighty-seven".