11786161 has 2 divisors, whose sum is σ = 11786162. Its totient is φ = 11786160.

The previous prime is 11786149. The next prime is 11786167. The reversal of 11786161 is 16168711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11771761 + 14400 = 3431^2 + 120^2 .

It is a cyclic number.

It is not a de Polignac number, because 11786161 - 2⁹ = 11785649 is a prime.

It is a super-2 number, since 2×11786161² = 277827182235842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11786167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5893080 + 5893081.

It is an arithmetic number, because the mean of its divisors is an integer number (5893081).

Almost surely, 2^11786161 is an apocalyptic number.

It is an amenable number.

11786161 is a deficient number, since it is larger than the sum of its proper divisors (1).

11786161 is an equidigital number, since it uses as much as digits as its factorization.

11786161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 31.

The square root of 11786161 is about 3433.0978721848. The cubic root of 11786161 is about 227.5747755647.

The spelling of 11786161 in words is "eleven million, seven hundred eighty-six thousand, one hundred sixty-one".