11820173 has 2 divisors, whose sum is σ = 11820174. Its totient is φ = 11820172.

The previous prime is 11820169. The next prime is 11820181. The reversal of 11820173 is 37102811.

It is a happy number.

11820173 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6165289 + 5654884 = 2483^2 + 2378^2 .

It is an emirp because it is prime and its reverse (37102811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11820173 - 2² = 11820169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11820103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5910086 + 5910087.

It is an arithmetic number, because the mean of its divisors is an integer number (5910087).

Almost surely, 2^11820173 is an apocalyptic number.

It is an amenable number.

11820173 is a deficient number, since it is larger than the sum of its proper divisors (1).

11820173 is an equidigital number, since it uses as much as digits as its factorization.

11820173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 11820173 is about 3438.0478472529. The cubic root of 11820173 is about 227.7934738517.

Adding to 11820173 its reverse (37102811), we get a palindrome (48922984).

The spelling of 11820173 in words is "eleven million, eight hundred twenty thousand, one hundred seventy-three".